Can confirm. I've been doing a lot of technical setup lately. Hardware, and niche software. Any issue I had or comparison of online services I looked for Reddit was the top result and of course I would click it because I'm burnt out and just want an answer. I'll say about a fourth of the comments on the comparison/help posts are now deleted or edited to make a statement about Reddit. Everynow and again it'd be a private sub. It was super wild. Luckily google has a cached version to view the sub in those cases.
I don't think Lemmy will ever be able to replicate that utility though. There can't be an expectation of a very specific technical post to still being around in 5 years since it'd be contingent on the instance to still exist.