Easy from your point of view... This is the argument I mostly hear from Apple folks, but my experience (especially with less tech savvy folks) is that they have no idea where or how to cancel a subscription on IAP and they think that the multiple "Apple" charges are just some iCloud thing or something along those lines. With Credit Card flows the alarm bells go off waaaay earlier: when a website asks for their CC data, they immediately scrutinize more (and thus, conversion rates are lower)
There’s a single page in the settings with all the subscriptions, and you can cancel any of them by tapping a button and confirming. You get emails regularly with a link to a page with the subscription information when it is renewed. It really is easy and much, much better than all the alternatives I tried.
I wanted to cancel an Apple subscription recently. I didn't know where to do it. I knew it was coming up because I got an email from Apple to say it was shortly due for renewal.
It took me about 5 seconds to google "cancel subscription apple" and find about a zillion articles on how to do it. Basically open up the App Store, go to your account, click on subscriptions, click on the one in the list you want to cancel. Done.
On the other hand, I also wanted to cancel a pet-locator subscription that was coming up for renewal (we're leaving the country, they don't have coverage outside the US) and I had to go through about 30 layers of "are you sure", "are you really sure", "you know this will stop your service, right?", "we'd sure hate to lose you", "Is there anything we can offer to change your mind", etc. etc.