No addons though, I assume. That's whole point of Firefox on a phone for me. WebKit / Blink based browsers have much better performance. (I don't use any of the features you mentioned, though of course that's just specific to me. Maybe other people would find Firefox on an iPhone useful.)
You don't have to "give up" Firefox, per se. I use Firefox and "Firefox Focus" every day from my iPhone X. Sure, Firefox doesn't use Gecko on Mobile, but a ton of core Firefox features work great: Sync, Send Tab to Device, AirDrop, etc.