I had to use chrome at work and the different windows for different profiles really pissed me off (like, more than is reasonable). I eventually discovered you can have multiple profiles in the same window, it just wasn't the default.

Try Container Tabs instead, it solves that use-case in a much nicer way.

Wait how?

I feel the opposite. Separate windows for each profiles make it much harder to accidentally mix the profile.

> I find it annoying how I need a separate window for each profile in Chrome

I find it way more useful to have a completely unique profile rather than bash everything together in Firefox. Profile specific extensions, for instance, don't work with container tabs. It's a non-starter for me.