The sketchy guy was the CEO of Mozilla and created JavaScript. If you don't trust him then why did you trust Mozilla when he was in charge?
I'm not sold on their crypto, but one thing is clear. Browsers need to stop getting the majority of their funding from big tech, especially Google. Maybe crypto is not the right way, but at least they are doing something.
Why do you trust the business practices of Mozilla who gets most of their funding from Google?
I do not trust their relationship with crypto
I do not trust their business model