Those "default options" are precisely "intentionally leav[ing] users vulnerable to hostile ad tech" (e.g. PPA). It's built into the browser and on by default. Mozilla have very explicitly stated they believe ads are critical for the web. It is still better the chrome though (and a patch set like librewolf is better still).
> Those "default options" are precisely "intentionally leav[ing] users vulnerable to hostile ad tech" (e.g. PPA).
The difference between Firefox's 1x and Chromium's 100x + 100x is in the degree of harm visited upon the user.
Finding harsh fault with former while giving the much more egregious example a pass -- this makes sense if one feels Firefox isn't abusive enough towards it's users.
Mozilla can have this position (and probably have it due to most of their funding coming from an ad company), but can still hold the position that the user must remain in control and be able to remove ads if they wish, even if it goes against the beliefs of Mozilla. Meanwhile, Google is actively working to make it harder to block ads in Chrome and in general work on technology which take away users freedom to control how their own computers should behave.