It improved my grades so much in college that I spent the 25 bucks as a broke student so I could have it on my second hand iPad. This was before AnkiDroid even existed so it's amazing the price is still the same.
Very appealing, makes people try app immediately. :)
It seems a lot like saying nobody should use GMail unless they agree to pay for premium Google Services.
Anki app has an interface for adding/editing cards, and can absolutely be used without AnkiWeb or syncing. In fact, this is how I used it myself for years. I would argue that using AnkiWeb and syncing is an advanced feature for people who got the taste of having own decks and don't want to loose it.
I think this "problem" is somewhat made up
This fictional person you describe also has access to the web and Anki on there.
Anki is not a very useful tool if you are not making or editing your own decks or a teacher is for you. This is an incredibly painful experience on mobile.
I would agree with you, but he doesn't seem to mind