Ive honestly never intentionally visited it (as in, went to the root page and started following links) - it was just where google sent me when searching answers to specific technical questions.
There were more problems. And that's from the point of view of somebody coming from Google to find questions that already existed. Interacting there was another entire can of worms.
Stack Overflow’s moderation is overbearing and all, but that’s nowhere near at the same level as Expert Exchange’s baiting and switching
SO was never that bad, even with all their moderation policies, they had no paywalls.