Whenever I start feeling worn out of the music I have been listening too I spend some time just scrolling through and listening. I am not a big playlist person but rather a library person. (I use Apple Music for this reason as they emphasize libraries). When I find a song I like I just add it to my library. And Apple Music’s interface is great as I can retrieve it by either looking for the album, artists, or genre (albeit it’s classifications aren’t very good).

I can't speak for that user in particular but I use Reddit for music discovery as well. My flow is this: I'll look for stuff with the genre tags I know I like and look for new artists I don't recognize that have those tags. I'll listen to one or two songs and set their name aside if I like them and go back to browsing. After I get bored of looking for new stuff, I'll go back through and listen to the entire discography of that artist and add songs I like to my Spotify or Youtube playlists. I then move from artist to artist that I set aside earlier. After that, I'll look for any collabs they've done and check out the assisting artist or I'll check out the "people also listen to" suggestions on Spotify and start the process over but there instead of on Reddit. That cycle typically lasts about a year before I get the urge to look for new stuff again on Reddit like that.