The problem is that votes don't age away. It's just really simplistic "answer A has more votes than B". I answered an old (2009) Ruby on Rails question in 2014

The problem is that votes don't age away. It's just really simplistic "answer A has more votes than B". I answered an old (2009) Ruby on Rails question in 2014 as all existing answers were outdated. It's still only the third answer with +30 votes. The two posts above it have been outdated since 2014, and the top one horribly so (but it's "accepted" so pinned to the top). A lot of Stack Overflow employees recognize these problems, but some don't and lack of management meant thing have been at a standstill for years because everyone can veto everyone else. Now there's new management, but they seem more concerned about fighting with the community over pronouns than improving the platform, so not holding my breath there either. I think a lot of the core ideas are still good, it just needs tweaking and adjusting in various places, and it's just stupid that this isn't happening.