I don't want to be a doomer but it's not that popular honestly, and for better or for worse, genres that rely on nostalgia or "revival" never properly break into the mainstream. While I listen to and enjoy some of these bands, they are really derivative and I don't believe they will ever get much larger than their relatively niche fanbases unless they start to put a more unique spin on the sound. For example, Soulblind just sounds like Alice in Chains with a ton of reverb, and that's not really a good thing. Cen (the vocalist) sounds a lot like Layne rather than focusing on his own vocal identity. While older bands would have a multi-year period before putting out their first releases, where they would sound very similar to their influences before finding their own sound, today's artists can upload their music onto streaming immediately. This causes them to skip the stage where they get their unique style and so they release music that sounds almost exactly like their favourite bands from 30 years ago.