Most topics still have old-fashioned forums, they're just even harder to find these days.
And there are still lots of blogs. Not all of them are SEO blogspam. And there's always libgen...
Reddit is pretty much the last place I'd go for reliable information, especially if we're talking about anything that's a commercial product.
This is like the Linux discussion. (No its not the year of Linux no matter how much Windows 11 pisses you off)
"Old fashioned forums" absolutely suck for discoverability. You have to waste time digging through posts, most of which are unrelated or just filler. No upvote/downvote and usually a mediocre threading mechanism. While we are on this topic, Discord is the same. IRC like applications are not an easy way to get to the point for the same reasons.
The authenticity of old fashioned forums is often outweighed by their poor UX and in general terrible ergonomics. It's no wonder that so few people want to use them anymore. Reddit's "nested, collapsible comments sorted by upvotes" format is simply superior.
20 years after Reddit started, the best that the forums can offer is perhaps discourse.org, which is barely any better than traditional forums – sleeker UI for sure, but it's still fundamentally the same unworkable linear format. It's like sticking to magnetic tapes in the age of SSDs.
Even Facebook, one of the dumbest discussion platforms, has nested comments. Terribly implemented of course, but how does the platform designed for the lowest-common-denominator kind of user have more advanced discussion features than forums made for discussion connoisseurs? It is utterly baffling.