A problem is that the platform owners argue that this kind of stuff is why they need to put up a security gate that prevents you from installing whatever you want on your own device while also allowing you to install the malware from the ads (... maybe because they want to control what you can install more than they care about the malware?)
> On goes Firefox, uBlock Origin, and a couple other extensions. They don't care what browser they use.
I did the same with my mom, but then her broker and doctor's websites started complaining that they will only run on a supported browser, i.e., Chrome.
I've gotten her to still use Firefox for most other things, but it's not easy.