It's also a for-profit company and you're not the customer, as you're not paying them money.
I'd be way more worried how they're using the data they're collecting on you vs Google or MS
Mullvad
Brave
Opera
Vivaldi
Microsoft
Heck zoho is in on a browser now
What net gain does each of these companies provide over skinning chromium that isn't in Firefox?
Last time I asked brave fanboys why they don't redskin Firefox and the response was "Firefox is pita to build" all the while we have projects like palemoon and waterfox that are hobby projects. If they can work with firefox, so could someone else but no