I had good experiences on Reddit, I was active in a few different communities and had good engagement without the 'avalanche of toxic responses' some people here are describing.
I'm leaving Reddit due to the changes at the top, not because of problems at the grass roots.
The grass roots are also wilted, though. All communites decline, unless painstakingly maintained. Not many want to keep doing that on a proprietary, hostile platform. So the overall degeneration is obvious.