One such difference (and not the least) is:
> Mozilla will maintain support for blocking WebRequest in MV3. To maximize compatibility with other browsers, we will also ship support for declarativeNetRequest.
Instead of giving Mozilla the benefit of the doubt, many people are instead instantly complaining that Firefox is not better and it's worth sticking with Chrome anyways.
Chrome has not been supporting proper content blocking for years. E.g. Chrome will not wait for content blockers to initialize before sending out requests, so the first website that opens when you start Chrome is probably not content blocked.
https://github.com/gorhill/uBlock/wiki/uBlock-Origin-works-b...
that said, i still miss a couple of xul extensions
They could have gone for something entirely different but instead they decided to blindly copy Chrome.
Currently, a Chrome full-chain is notably harder than a Firefox full-chain, with the former being at "state actor ITW" level, and the latter being at "your friends started a never-heard of consultancy and they decided to do the classical trick - pwning Firefox at Pwn2Own" level.
This isn't the first time Chrome has crippled user ability to filter content on a deep level.
So it doesn't matter how much hardening Chrome has if it allows for drive by download attacks from unknown domains.
Oh, and I suffer from using NoScript (currently on Chrome, unfortunately) every day, I very much want to have a secure enough browser to not giving me decisions like "do you want to whitelist cdn.jsdelivr.com [1] or click four times for each page you read".
[1] It distributes arbitrary shit on github, so good luck whitelisting this "known" domain.
Adblocking extensions go a very long way in terms of keeping average users safe. If you're a potential target of sophisticated actors (of any level of sophistication above script kiddie) then you're not really the target audience of generic browser advice.