Yes, that’s obvious, what I mean is if they have some kind of tools/functions that make it be able to do something others can’t. The example that comes in mind is when I was checking a website someone suggested me https://my.rhinoshield.eu/ where it says “your browser isn’t supported to do whatever it does, please install chrome”
Firefox
vs
Chromium based browser
As far as I know, iOS is and was always bad at background tasks, like uploading stuff on various sites/apps (like Instagram story, telegram file, etc). Now, I don’t know why it changed do badly with iOS 18 but I’m sure is apple’s fault with their system