The YouTube sponsor situation is actually crazy, I think 100% of them have turned out to be either scams or just very overpriced. Even ones that sounded reasonable, like Ground News, and VPNs.
yeah my rule of thumb is never buy anything advertised on youtube unless it's independently trustworthy or otherwise notable
like I get ads for Lexus -- I'm in a big city and don't need / want a car, but like Lexus is a real brand, basically Toyota.
Some no-name VPN or idle-game app is an immediate "I will actively avoid this, froever"
It's why I don't get viewers getting angry with a creator for taking a specific sponsor. YouTube sponsorships are basically an advisory not to buy a product. It's like an anti-advert in a sense. Something appears in a sponsorship, that thing is definitely bad even if we don't know why yet.