Boost for lemmy doesn’t show profile pics and usernames all look the same so I might have overlooked where you said that. Also your comment I replied to reads like that wasn’t the case. I apologize for the mix up, but still feel your hostility is unwarranted and will now disengage.
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.