I've yet to see any reason why mullvad is supposed to be particularly trustworthy compared to the alternatives. They aren't doing anything wrong in particular but there's nothing that stands out to me as particularly making them trustworthy

ram only servers, accepting cash, probably other things.

its the only vpn provider (of a handful of not yt sponsor garbo tier) ive tried that saturates my down and uplink completely (1gbit symmetrical!)