Maybe when it started back in the late 90s it was a bastion of great information; however, I have never found a single answer that was worthwhile on there when landing from a search engine query.

If anything, this is likely flooding LLMs with incomplete/invalid/useless information and it's just time they deprecated it in favor of something more modern and useful.

A lot of the threads on there are “hey this thing is broken”, opened 7 years ago, and the problem still isn’t resolved

Good. It's useless - completely, utterly useless except as some sort of anthropological meta-study of the many and varied ways tech-challenged users will look for help in all the wrong places, the weirdos who apparently hang out there purporting to help them (and almost never doing so, except by accident) all downstream of a mega-corporation's Web 2.0 fever dream of not having to pay anything for customer support.

Now that I type all that out, I hope it's not completely deleted. Leave it to science.

This is exactly how I deal with my tech debt.

You could never get an actual engineer to reply on those threads anyway. Whenever I had issues with my iPhone, I always find links to this forum and get disappointed.