I think it comes down to your threat model. For the vast majority of people (ie, 99%) there's no difference between the major browsers and the overall security

I think it comes down to your threat model. For the vast majority of people (ie, 99%) there's no difference between the major browsers and the overall security they provide. For that 1% the difference may be noticeable but pale in comparison to other things like solid opsec, etc. For instance, it doesn't matter what browser you use if you are using SMS 2FA and get hit with a sim-swap because you're bragging on Twitter about how your Coinbase account is sitting at $2MM. On the other hand, if you're international arms dealer your browser choice probably matters a lot more. Though, the three letter agencies already have your poster on their wall and you were pwned a year prior anyway. Even worse, if you're outside the US the drones have already been deployed. The US isn't beyond blowing up hackers, look at Junaid Hussain[1]. [1]: https://en.wikipedia.org/wiki/Junaid_Hussain https://en.wikipedia.org/wiki/Junaid_Hussain