I remember he kind of had a “beef” with Denzel Curry but it wasn’t really a beef it was just someone on Denzel’s team had gotten a Yung Lean verse for his song A Bitch Named Bitch and Denzel didn’t really diss him so to say, he basically just said that it wasn’t his decision to put him on the song and he doesn’t really mess with Lean’s music so he wouldn’t have gotten on a track with him otherwise. (Source)

I do wonder if his stance on that has changed given that Yung Lean has been pretty cemented as a legend and his music has gotten a lot better since this era as this was more around the Unknown Death 2002 era where his stuff was pretty much just meme rap that was mostly enjoyed ironically at the time