It works with most websites, it syncs my bookmarks across computers, lets me reuse my existing Google account instead of needing to make a new one, and I really don’t care about my data going to Google because I already give up my data in exchange for free services (which feels like a win-win).
It’s not a bad browser, the reason it’s hated is because Google is using it’s near total market share to push ads and other bad practices onto the entirety of the Internet. The more people aware and fighting back the better. That’s why I personally no longer use chrome even though using Firefox at first was very different and a bit hard to get used to.
Chrome is a good browser, and Firefox is a good browser they’re just different. They both do all those things you mentioned.
The biggest deal is that chrome is closed source, and run by a company who is literally legally required to turn a profit anyway it can because it’s publicly traded. They will do whatever they have to to continue to turn a profit. Quality of the Internet or user experience be damned.
Firefox on the other hand, is made by a company that is not only not publicly traded, but it’s a non-profit. Firefox is also FOSS (free and open source). Mozilla literally wrote the MPL (Mozilla public license) that’s used by several different FOSS apps.
So, the options for modern browsers are:
A. Use a chromium based browser or use chrome, supporting a company who is incentivised to make everything as for profit as they possible can
Or
B. Use Firefox created and maintained by a nonprofit who is trying to push towards a more free and open Internet.
THAT is why chrome is hated.