Precisely the last thing we need is more ads and unwanted features in Firefox.
WRT the features: Firefox needs market share above all. I'm actually terrified by a future where companies can't be bothered to put even a minimal effort to make a website/service run acceptably on Firefox. Try to use Slack on it, and you'll see what I mean.
This isn't the future unfortunately. This is the present.
Really feels dev culture has regressed since the early chrome/safari days where working in multiple browsers was seen as priority.
My wife says what does it have to do with the internet. I told her Mozilla has conflicting priorities.