For a summary of events: [1]
Imagine if Barack Obama / George Bush decided to go ahead and punt some SCOTUS members ahead of the end of their terms, because they were afraid they were going to lose his upcoming elections? Imagine what what the consequences would be.
'Law and Justice' , after having won elections came in and did some nasty things (which you point out) and were sanctioned by the EU for it, however, it's hypocritical that the group that initially broke the law on a very fundamental issue were not also sanctioned.
I don't remotely support any of this, but it's important to consider that this didn't just happen out of thin air.
This 'free speech' bill is an interesting political issue, I wonder how much of this is pointed at the local population, or how much of it is trying to obtain some populist goodwill in other EU nations ... or if it's trying to gain some kind of 'moral high ground' leverage in their current 'issues' with the EU.
[1] https://en.wikipedia.org/wiki/2015_Polish_Constitutional_Cou...