What you have to understand is the avalanche of low-quality questions that came in, pushed by "academics" who should have known better, telling students things like "just ask on SO - they will write it for you", which is bad on so many levels.
But when it got really bad was when the new owners, after Jeff & co sold out, took over. Woke nonsense sprouted everywhere, people with no technical knowledge did moderation. And, whoa, if you criticised this, you were banned. That's when I gave up.