Microwaves have a perfectly usable and quick timer input method. Is there anyone who thinks swiping and scrolling up and down to pick a time makes things easier? I have no idea why they think a smartphone timer should be any different.
Tangentially, most microwaves are missing a key feature: a combined `start` and `minute plus` (or +30s, whatever) button.
It's the kind of thing that seems trivial, but once you've used it, is so blindingly obvious that it's the Right Way To Do Things that you'll wonder why every microwave doesn't do it.