It should be pretty clear from this that people do not understand the need for a company that makes a browser to have a ToS. If Thunderbird is made by the same company but doesn’t have a ToS but has more valuable information in it (it’s an email client) then clearly Mozilla isn’t doing the shady things that people are saying they are. If they were they would have started with the gold mine of emails which are a better source of user data than any browser related data. But they didn’t.