The fretboard on my Gibson is made in the same manner with Richlite and I love it. It is very smooth but not glassy like plastic, it is much easier to control the pitch of your bends.
Reminds me of this Polish company Ruf Guitars I've seen a video of recently. They use Richlite for the fretboard, but the guitars are all one piece molded from Ruffaine, some kind of proprietary epoxide composite.
https://www.rufguitars.com/
Interesting- they go a long way on the website to avoid telling you exactly what it is.
I know right? I've searched every page so I could give a better description than "proprietary epoxide composite", which sounds like made up marketing lingo. The video on their site vaguely mentions glass-fibre, carbon-fibre and epoxy resin.