It's fine on desktop, and using profiles is not too much of a big deal for me. But on mobile, Firefox is not as intuitive as chrome is to me. On my phone I have Chrome, which I only ever use if a website fails on all other browsers, I have Brave as my daily driver, and Firefox because I want to make it my default.
I just can't navigate as easily on Firefox as I can on Chromium browsers. An example, when I use HN, I open links on a new tab and I can swipe the header left or right to navigate from tab to tab. Easy breezy.
On Firefox, I have to click on the tab menu, figure out where I am, and read titles to know where I am going. Every single time I forget, I end up clicking on many tabs before I find where I am going.
Don't know if this feature in Firefox's pipeline, but that's the only thing stopping me from making the switch.