MS Teams does not work properly on Firefox for example (I'm forced to use it once in a while for work). Same with other web-apps that often don't function correctly.
On Android Chrome manages to stay open while multitasking while Firefox will close the tab 90% of the time requiring reloading the page. That's especially annoying during check-out or logins when I need to switch to a 2FA app.
Certainly not. I just put in some data in an insurance broker thingy and I would be able to get insurance for approx. 120€/month with partially comprehensive coverage (including obligatory liability insurance). These outrageous prices are definitely a US thing.