Firefox is deliberately gimped by Apple on iOS, along with every other browser. It’s not a fair comparison. It’s basically Safari without a ton of extra features that Mozilla was never going to be allowed to implement, which is why the EU decided Apple was being anti-competitive.
Firefox doesn’t even need extensions to match Safari, but it does need gecko and all the settings it supports on other platforms.
Apple is a shady company and trusting them with your data is a big mistake.
I don’t disagree that Firefox is deliberately gimped, and it’s built in blocking features on desktop match Safari on iOS. I’m not sure I really agree that Apple is a “shady company,” in many respects they are doing a good job with end to end encryption and ensuring that they don’t have access to your data in the first place (not to excuse their extreme walled garden approach, which stifles competition and limits good options like Firefox [real Firefox] with uBlock Origin [or uMatrix]).