It really isn't though. I also started using Firefox recently and I miss tab groups on mobile as well as on my PC. Yes, there is the simple tab groups add-on, but it just doesn't compare.
Brave is also easier to set up ad-blocking, because it comes with ad-block enabled and script-blocking two clicks away.
Don't get me wrong, I will continue to use FF, but Brave has some features, FF does not have (yet).
Tab groups is the biggest thing I'm missing after I made the switch the other week. I'm used to having loads of tabs open, so not being able to easily minimize the ones I'm currently using is annoying to say the least.
One plus is containers. Only opening Meta sites in their own container, same with Google/Youtube is pretty neat.
Oh I hate bookmarks for that purpose, I already have too many as is. Found a way to make the tabs even smaller though, so not having a scroll bar for them will be very nice!
Remembered one more thing; in Firefox I can only have 31 tabs open before the scroll bar appears. In Chrome it's closer to 90-100! That's kinda huge imo.
If you go to the about:config page you can edit browser.tabs.tabMinWidth down to 50 (default is 76) which lets you fit a bit more
If you want more than that it's possible by editing the userchrome: https://old.reddit.com/r/firefox/comments/zda0ov/can_i_get_below_50_tab_width/
Modifying userchrome is admittedly difficult if you're not a developer.. but not out of reach if you're able to follow a guide.
I did set the tabMinWidth first, but the result was... lackluster... to say the least (I like having ~50-100 tabs per window....). However, I JUST found out about userChrome.css before you wrote, and also found code that worked for it!
Some sites don't adhere to standards, it's like old IE all over again. You go to load the site on FF and some check form doesn't work. This happens on 3 sites that I have to use.
I left chrome for FF. Used it almost exclusively for a few years, it's good enough. Recently it got some needed boosts via Microsoft not screwing them.
About 6 months ago I started working with IPFS a lot. Brave baked in support and it's pretty good, so I use brave as my primary and FF as my secondary. I was using some tools to sync bookmarks, but now I just pop into FF and import from brave every now and then.
Brave is better and anti-fingerprinting, if someone is going to sell my data, I think I'd rather give it to brave than google.