Unfortunately, Firefox‘s security on Android is .. not the best

(https://madaidans-insecurities.github.io/firefox-chromium.ht...)

It's not just Android.

Unfortunately.

Wow that article that completely misses the point, yes, Chrome has better sandboxing, which offers it marginally better security, but that has nothing to do with Firefox's far better privacy features.

For people who are not spies or hoarding millions worth of cryptocurrencies on their desktop PCs, they're not likely running across zero day exploits on the regular. They are however running across trackers galore and Firefox's tracking protection and anti-fingerprinting features are likely to make a larger difference in practice for all but the most targeted of individuals.

Are you using one of those de-Googled custom Android ROMs or stock?

I am - GrapheneOS is excellent. I do unfortunately run sandboxed Google Play Services for access to Google Maps & Google Play through which I get my banking app. Pretty much everything else (launcher, podcasts, VLC, Firefox, FluffyChat&Element for Matrix messaging, ntfy.sh/UnifiedPush) is via f-droid, and works great.

On a Pixel or something else?

Used Pixel 4, yeah - I think the later pixels have better security features & support from Graphene, but this way I also help reduce ewaste.

Just interested because I like Graphene but don't want to use a Pixel. I'd love to run it on a FairPhone honestly. Looks like DivestOS is my best bet.

Honestly nope. I mostly need phone for banking apps that thanks to Google DRM (SafetyNet) dont play too well with custom ROMs. Yet Firefox work quite well across Windows, macOS, Linux and Android and it has huge advantage of having proper adblocking. So it's mostly no brainer which browser to use.