On GrapheneOS they recommend Vanadium - a more secure Chromium fork - and specifically recommend against Firefox, but that's on mobile.
> The sandbox has been gradually improving on the desktop but it isn't happening for their Android browser yet.
Context is definitely interesting to have with your statement (From https://grapheneos.org/usage).
FF is largely funded by google money? Chrome _is_ google.
FF invests in AI features? Google invests even more in AI features and shoves them to you without consent (which ff asked me for after upgrades).
Maybe FF is not perfect or great or whatever by one's point of view, but it _is better_ than chrome, at least regarding these arguments.
It's the sneaky ways that Firefox are Google that bother me. Above you said that they recently added a switch to disable AI - only after backlash (though I have to admit that the original blog post said there should be an option to disable it). I also dislike that they are focusing on AI and advertising instead of improving their browser, but that's their decision.
If you can, run it, report issues and help them develop it.
I'll give myself as an example, between writing that first comment and replying to you, I downloaded and built ladybird on MacOS - it took 25 minutes, most of which was me fixing build dependencies - and here I am replying to you from an alternative browser. Text navigation is a little weird and text boxes are weird, but so far it works.
Of course, if building in the background is more effort than you're willing/able to expend, then continue using Chrome or Firefox until others finish the alternative, and then decide if the time required to download, install and get used to a packaged browser is also going to be a hindrance to you paying your bills.
Just uBlock Origin pre-installed
Yes, I hate that it's also Chromium, but no, there aren't real alternatives.
There's also WebKit-based FOSS browsers not based on Chromium nor Gecko. Upstream it's maintained by Apple but the open source webkit browsers should not have any questionable features by default.