ChipMixer clearnet is down for a long time now, I can't remember exactly since when it's down but if I'm correct it should be at least a few months and since Tornado Cash developer got arrested(not sure if both are correlated lol). Scammers are using that opportunity to rank up the fake ones and rip innocent users.
It's not down at all, ChipMixer is still using .com domain but it is not being used for mixing but it is redirecting to .onion Tor domain.
I think several forum members was suggesting this solution even before it happened to reduce and avoid risks of clearnet domain getting hijacked again.
We also noticed phishing domains like .xyz are on top of search engines but that is unrelated with official .com domain.