On MNEK I agree with what he’s saying (although I do think some of Cat Burns’s music IS R&B) and as he infers, the problem is the industry continuously blurring the lines where R&B is no longer given an identity by labels. There’s room for R&B artists who don’t cross genres to still be successful, they’re just not supported because the industry decided nobody wants it, even though EVERY OTHER DECADE has proven otherwise
It’s also partly because hip-hop (in its current guise, which isn’t really hip hop but some new grime/trap/mumble rap hybrid) is now so prevalent that it has become the alternate to pop and there’s no room for R&B because labels decided there wasn’t.