Even if you manage to bypass the problems you mention (by bypassing the popular subreddits), Reddit has become a terrible source of information in general.
The old "site:reddit.com" trick doesn't work that well anymore. Well, it returns old results, so there's that.
Smaller Subreddits have not only become echo chambers, but they now seem to cater to people trying to get into the field rather than the previous mix of professional and semi-professionals. And I have the impression that 90% of the advice being give is being done by amateurs who never earned any money from the field they're giving advice of and are rehashing echo-chamber advice. It's like a worse Quora.
When there is any sort of equipment involved, they seem to have become an Instagram feed, with only photos of the acquisitions. There's rarely any insight into the product itself, it's always people posting things right after opening the box, sometimes from their car, rather than "playing" with it and posting something more insightful afterwards.
The worse part: when there is any marketable skill related to the niche, the only discussions there will be about how to market it. RIP music production and game development subreddits.