One of the big problems of the last ~15 years is the whole "Web 2.0" thing where most content started being locked behind a unindexable door (Facebook, Discord, Slack, etc.). You add on top of that "SEO", spam and you'll get what we're seeing now - most of the top results are useless and people rely on human-moderated content (Reddit, Quora, etc.) to find information.

The thing is Reddit will most probably face a lot more spam because of this, eventually going down the same road of SEO-optimized garbage as the rest. Or maybe not, hopefully.