I can use uBlock on the web, I can't do that on iOS. I'm fairly confident that it gives me more privacy than what I can get on iOS. It's much easier for me to get a vague idea what a webapp is tracking and what it's doing. You can see all the network requests, you can disable javascript, disable access to certain APIs etc.

I bet iOS electron based apps are tracking significantly more than FF + uBlock. It's also why I strongly dislike Electron. It's basically Chrome without uBlock.