Something I didn’t see in the comments is highlighting the actual, very real, fact that the user was incensed by the app.

This is one instance, with one vendor, but our day is made up of thousands of interactions across multiple vendors. And all big (major) vendors seem to have these kinds of issues.

That's a problem because these interactions add up. To the point where I’ve personally been accused of “[liking] being angry”

I’m not sure what the answer is. But for me, I’ve been trying to find and use tools that don’t piss me off, paid or otherwise. So for mail and calendar, for example, I tried out https://www.hey.com/ and it not only does it not piss me off, but I like it for how I use calendar and mail.

I don’t know if anyone here has read Tools for Conviviality by Ivan Illich, but the book comes to mind every time I run into these kinds of frustrating interactions.