It's a part of this new woke short attention span internet media "everything is fodder" world we're living in. If you fit in with their agenda they will catapult you to high levels. shyt changed with Lil Nas X IMO, although Tyler and Frank Ocean were probably the stepping stone for him. Tyler got a lot of critical flak when he was doing the angry shock value lyrics. Then he switches it up, makes a softer, nicer album and says he's gay in one of his songs and suddenly he's a critical darling and winning Grammy's. Meanwhile the rest of those Odd Future cats besides Tyler and Earl all but disappeared. The thing is Tyler is talented regardless of his sexuality and has some very good music, while LNX is minimally talented. But since he makes extra gay videos that make homophobes and parents uncomfortable, the media loves him. But this is all irrelevant to the fact that LNX is all image - his music is bland, boring generic pop. So with Isaiah, it's probably a wave he can ride. All he's gotta do is make music about the video leaking and his struggles with being closeted and the media will eat it up. They'll be ravenous to throw awards and accolades at him even if the song is bad. In other words, this shyt happened to him at the right time - yeah he got outed and caught some social media flak over it, but if this was the 90's or early 00's his career would be over.
It's the same with the thot rappers now. In the 90's, Kim and Foxy were popular but hardly praised. I'm pretty sure lots of people made jokes and criticism about them being hoes and too sexual (while Lauryn was lapping up all the praise and awards). Early 10's, Nicki comes through and becomes a huge star but isn't exactly a media darling. But she opens the door for a new wave just as Kim and Foxy opened the door for her. Then Cardi, Meghan, Doja and this new wave of sexualized female rappers come through even though they aren't doing anything different from Kim, Fox and Nicki (and aren't as good as rapping either). But they came in at the perfect time, when the mainstream culture was ready to accept them. More cases of "so and so walked so they could fly". A lot of who and what blows up is based on where popular culture is currently at.