There are still good models online, maybe with less visibility as they don't use dedicated site but instead c4s, manyvids etc.
But the issue is that hair fetish is a niche and most of the hair fetish people I saw on this forum and other pages are just here to try having free content from others, instead of buying. The lack of support does not encourage models a lot.
Anyway for models in activity I recommend you these two, I bought custom content from them several times and it's worth it :