People trading security (sandboxing) for performance (lower memory usage and faster speed in Firefox) deserve to be a) owned and b) have their whole browser crash when one tab crashes.

I'd be using Firefox if they started to sandbox all the tabs. To me the argument that it's faster and use less memory because it's not sandboxed is a very poor one.

Actually that argument shows what is wrong with the mindset of many people in our field.

You should never trade security for a bit more perfs.