The winning proposal of referendum about nuclear power in 1980 never said anything about when the shutdown should be, that was something the politicians added afterwards. What it said was that shutdowns should be done as long it doesn’t undermine employment and welfare.
And because these shutdowns have radically increased electricity prices with unemployment as a result, thus both undermining employment and welfare, it actually violates what the winning proposal stipulated in the referendum.
Furthermore the tax on nuclear power was massively increased three times as consequence of influence of the two green parties, Center party and the Green Party, 2006, 2008 and 2015, and the same time subsidizing renewables, thus making nuclear power not economically sustainable. There was even a referendum in parliament about these latest shutdown with only one vote difference. No, it was intentional.