His point is that Samsung allows carriers to manipulate and install crapware on their phones. Apple does not.
Whether you think built-in iOS features are "crapware" is besides the point. Everything that ships with iOS is put there deliberately by Apple. Compare that to a Samsung device, where you will be getting stuff put there by Samsung (which you might agree with and want) plus random stuff put there by carriers (which you almost certainly don't want).
Why does it matter to me, the customer, whether the crap on my phone that I can't get rid of was placed there by Samsung or my Carrier or Apple? It's still crap that I can't get rid of.
It doesn't matter to you as a consumer. That's not the point.
It only matters if you are interested in discussing the amount of control carriers are able to exert over manufacturers, and whether companies are willing to compromise their design vision to satisfy carriers.
The entire point of the OP is to that Samsung has a problem with crapware that is not under their control. Regardless of whether you think Apple's pre-installed apps are "crap", it is entirely under their control to remove them — meaning they are in a more flexible position than Samsung.
Again, not relevant to you as a consumer. Only relevant if you wish to take part in this discussion.
Whether you think built-in iOS features are "crapware" is besides the point. Everything that ships with iOS is put there deliberately by Apple. Compare that to a Samsung device, where you will be getting stuff put there by Samsung (which you might agree with and want) plus random stuff put there by carriers (which you almost certainly don't want).