He's extremely cool with it.
Lil Yachty was one of a few rappers named on Eminem's new surprise project Kamikaze, and while the rapper's mention was not explicitly a "diss," according to Em himself, it wasn't exactly a compliment either.
"I can see why people like Lil Yachty, but not me though/Not even dissin', it just ain't for me," he raps on "The Ringer," in a bar that seems to speak more to rap's generation gap than Yachty's lack of abilities. After that, he points out the possible difference in audiences between himself and Yachty: "All I am simply is just an emcee/Maybe 'Stan' just isn't your cup of tea/Maybe your cup's full of syrup and lean/Maybe I need to stir up shit."
However you take the lyrics, there are enough people online suggesting Eminem is "taking shots" at Yachty that the rapper caught wind of it before even hearing the song. Though he was unaware of exactly how hard Em went in on him, he seemed entertained and honored at the thought of being dissed by a legend.
"Lmao me personally I think it’s fye Eminem took a shot at me.. I fuck wit Eminem," he wrote on Twitter. When someone responded arguing that it was not a diss at all, Yachty revealed that he was just going off of what Twitter had told him. Turns out, he's a bit bummed out he didn't get a proper shot. "ohhhhh word I’m on a plane i didn’t even know my phone just blew up I was like ohhh shittttt word that’s less exciting lol," he wrote.
There are a few rappers whose disses were a little more clear cut: Drake, Lil Pump, and Machine Gun Kelly to name a few. Check out a comprehensive list of those who got burnt across Eminem's new album here.