Things have changed over time — the forum format might not be the most popular these days, but I think Polycount still has great value thanks to its community and tutorials. Hopefully, new content and techniques will keep appearing over time. It’s really nice to have all these tutorials gathered in one place.
These days most artists want to post their work in places that'll help them gain exposure (for their portfolio/game/etc.), but Polycount is only really focused on helping artists with critiques and technical questions. Artstation took over for showing portfolios (after CGHub died), and generic social media sites make more…