The quote clearly states ‘joined the party’, those are NOT collaborateurs, those are members of the Nazi party, or as explained - Nazis.
Nobody was threatened to join the party, historians agree on that, people who joined were either true believers or did so to gain some sort of advantage.
The NSDAP, at their peak had 8.5 million members (1945), so around 20-25% of the German population at the time. We can argue about the other 80%, there is some nuance to be found there, of course. But those 20% Nazi Party members were Nazis, no nuance needed.
As others mentioned, most apps offer word filters, just got to hit enough key words. I blocked the word “Tr*mp” and it cleared my main feed up real good already, with some fine tuning I guess I can get rid of the rest too.