Technology moves on and those early answers are simply no good. Recently I decided to learn a few things from first principles - reading the specs. If I then try to put a half decent answer on SO then it will be answer 97, 3563 upvotes behind the 'right answer'.
New person who comes along isn't going to get to my detailed answer on page 5, the one that points out how technology has moved on and why the winning answers are not what you needed. They just need to deliver the deliverables and the first answer will suffice. They will take it and add another plus to the upvotes.
You can't win, the odds are stacked in favour of the mediocre. This wasn't always the way with Stack Overflow, in fact it replaced forums where the same problem existed but only to stall the nonsense for a few years, we are back to peak nonsense again.
I think time is ripe for Stack Overflow to be usurped, nothing against the site which I have so loved over the years, but even mySpace had to be replaced by Facebook.