My experience has been the opposite in the last few years. I've found myself filtering results google/duckduckgo specifically for reddit, because I was finding better answers to technical questions. Anecdotal, of course, and it does seem to be getting worse (less successful for me) over the last 6 months.
Same for me. A very specific non technical example was when I was searching about Natto , the Japanese fermented soybean food. About how to make and tips on how to better prepare it.
A search in Google yields pure SEO garbage. Adding site:reddit.com gave some good advice around natto and even pointed to some cool YT video (natto dad or similar).
The top of my mind was when I was having all sort of trouble with my Dell XPS and needed to find info on some bios operations, GPU testing, etc. Turned out it was a hardware failure that was tough to prove. Google yielded nothing, but there were a few threads on reddit that sent me in the right direction.