Is using multiple browsers (split across activity) still a useful and effective way to reduce fingerprinting across the web? I've been using Firefox multi-containers / temporary containers and, while there's usually always 'more' you can do, would additional browsers be a significant net positive for privacy?
Different browsers or even multiple concurrent Firefox profiles allows you to have different browser add-ons and options for different services. This have some advantages for fingerprinting resistance, but you must put some work to manage different profiles. I do log in to YouTube and subscribe some channels while I use different profile for not-logged-in YouTube surfing and watching videos linked on forums or social media.
There is another method which uses the reverse of your technique. Example would be to use the Tor Browser Bundle and avoid all attempts to modify it at all. Using this manner you look EXACTLY the same as other Tor users. In other words the browser fingerprint matches all other TBB users and not YOU specifically. I prefer this method when I want to go DEEP without wanting to leave a personal "reflection" of my image.
