No it's not, phones have unique identifiers, easier hardware access, poor cross-apps sandboxing capabilities, they also have no private mode, don't support adblocking & tracking blocking...
There's a reason everybody nags you to install their apps on every website.
> - ad blocking doesn’t work well or at all for first party ads like FB, Reddit and Twitter use.
For now, only Facebook is resisting on it's own website with some obfuscation but I have no doubt that new browser apis will close that gap. For Facebook tracking on external websites it does work though, something I can't say exists at the moment in the mobile world.
I'm not saying Apple does not take any steps towards fighting this, I'm just saying they are currently very far to the level of privacy of a browser.
> It’s not about obstructing, a “native ad” looks just like any other post and is integrated into the feed.
They have to disclose sponsor posts by law (at least in the EU). Right now they are using tricks of random divs to hide that to adblockers. When the browsers will add a contains-visible-text:() selector (or similar name), it will be game over.