If the reforms leads to Bolshevism then it is Bolshevism. What Bolsheviks never accept is that society is more than their political ideas.

It is important to remember that the Social democrats is the political wing to the LO union. It is the union that has permanent seat in the governing board of the Social democrats (Verkställande utskottet), not the other way around. It is the LO union that funds the Social democrats. It is in the union where the real power is (at least back then).

What the union wanted was to get the political wing to implement a legislation so that the union could confiscate private business. This would have been the end of Sweden's pluralistic parliamentarism. Instead an all ruling union with unelected bureaucrats with it's own political wing would have almost total control economically and eventually politically and then later socially.

Your timeline is completely messed up, jumping years back and forth, probably intentionally to confuse the reader what actually happened. Here is a real timeline with the most important dates

  1973 September: Social democrats wins election
  1974          : LAS Lag om anställningsskydd (Employment Protection Act)
                  Abandoning the spirit of Saltsjöbadsavtalet from 1938
  1974          : General parental insurance
  1975 August   : LO union present the idea of Löntagarfonder (Employee funds)
                  20% of company profits should forcibly be transformed
                  to equity issuance and handed to the union
                  No limit on number of shares, i.e eventual union takeover
  1975 November : Dictator of Spain Francisco Franco dies
  1975 New Years: Union boss Hans Ericson vacations in Spanish Canary Islands
  1976 March    : Astrid Lindgren writes here famous story about high taxes 
                  in "Pomperipossa i Monismanien"
  1976 April    : Ingmar Bergman leaves Sweden
  1976 May      : Reduction of taxes as a response to
                  Astrid Lindgren critique about high taxes
  1976 Summer   : LO union decides on supporting Löntagarfonder
  1976 Autumn   : Right wing opposition attacks the Löntagarfonder,
                  calling it "Öststatssocialism" (East State Socialism)
  1976 September: Social democrats loses election to the Right wing opposition
                  First pure right wing government since 1936
                  Coup d'état as a famous social democrat called it
  1978          : Pamphlet "Fritt näringsliv eller fondsocialism", 
                  opposition from the Swedish employers' organization SAF
  1979 September: Right wing wins election
  1982 Februari : Revised version legislation for LAS 
                  (note this is by the right wing government)
  1982 September: Social democrats wins election
  1982 October  : Big Bang, massive devaluation of 16% for the Swedish Krona (SEK)
  1983 October  : Massive demonstrations against Löntagarfonder 
  1983 December : Revised and water downed version, because of the massive protests,  
                  of Löntagarfonder implemented    
                  5 different funds 
                  each fund could not own more than 8% of a company (less than 50%)
  1985 September: Social democrats wins election
  1985 December : Swedish Centralbank (Riksbanken) decided together with the
                  social democratic finance minister to approve de facto 
                  unlimited loans for commercial bank customers
  1986 Februari : Prime minister Olof Palme murdered
  1988 September: Social democrats wins election 
                  (probably would have lost if Palme hadn't been murdred)
  1989 November : Berlin wall falls
  1990 August   : Iraq invades Kuwait, increased interest rates follows
  1990 October  : Investment company Nyckeln cannot pay its debt 
                  speculation on real-estate with massive loans
                  Begins the Banking, Housing and Financial crisis in Sweden
                  Banks and real-estate companies goes bankrupt
  1991 September: Right wing wins election
                  First decision of new government is to scrap Löntagarfonder
  1992 Autumn   : Floating exchange rate for the Swedish Krona (SEK)
                  after a failed attempt to defend a fixed exchange rate
                  The era of politicians devaluing the currency is over
  1994 September: Social democrats wins
  1996          : Finanspolitiska ramverket (Fiscal policy framework)
                  no more overspending by politicians, end of Keynesian politics
  1998 September: Social democrats wins
  1999 Januari  : Independent Central bank by law
                  No more money printing by politicians 
                  to bribe the electorate

What does this all sum up to? That the "reform politics" of the Social democrats died in the 1980s. The 1990s was the tough years of cleaning that mess up.

Today the Social democrats is just an empty shell of its former glory. Just an empty vessel for corruption and greed without any new ideas or reforms.