I’m fairly sure they have made their browser the best at ad-blocking already.
But due to human nature, negatives like daring to remove some feature with minuscule usage gets heavily upvoted.
IME Firefox is much more of a battery hog on MacOS, Chrome's history page is much better, and some sites (Glassdoor and Google Meet come to mind) don't work properly in Firefox. And I don't really use the developer tools in either but I've generally heard that Chrome's are better. I still use Firefox as my daily driver but it's not flawless.
I just tried FF again today for the first time in months and updated to the latest Mac version and...I found the Quit feature didn't work. Neither Command-Q nor Quit option from the menu...And it's something like this every time I try it -- there another wtf moment with the first 5 minutes.
I keep chrome installed as a backup because some sites are just plain broken. But 99.9% of my browsing works fine, and so I've made FF my default browser on both personal and work machines, and have not looked back.
Chrome is just too hostile to its users. Between incognito mode tracking users around the web, this extension/API hoo-hah, among other things, I'm just not excited about it as a browser anymore.
You did a lot for us, Chrome, but it's time to loosen your grip on the browser market.