That shit was so completely out of left field it wasn't even funny anymore. It explicitely went against like 10 things he said in prior episodes.
For a character that always preaches about deluding yourself to get up and delude himself real hard was just mind boggling writing to me.
and it's mind boggling to me that people were willing to blindly buy into his earlier cheap nihilism so vehemently. go with that shallow ideology irl if you wish but in the context of the show it's clear very, very early on that his nihilism is a defense mechanism. and the finale isn't him suddenly becoming a 7th heaven character, it's him admitting his philosophy stemmed from weak will.
that you think anything but nihilism is delusion is hilarious