If you really want your app to be ergonomic, make sure it works with one and two finger gestures, such as dragging a finger to scroll.
The boring, "ugly" built-in OS widget works extremely well. Every attempt to replace it with something better for one use case inevitably throws out a dozen others that the designer didn't think about.
Then the only way to scroll on desktop is to highlight text across the frame's edge.
not hiding the scrollbars on your website doesn't cost you thousands of dollars so I don't really see the equivalence
Is it not an extra step to intentionally hide the scroll bar? And thus, simply no extra work to just... not? Scrolls bars are a convenient feature for all users, nobody is judging the appearance of your website around how it looks with a scroll bar.
Art? Nah. (Maybe once.) Dead horse gimmick, now.
Well, you don't know what tomorrow you will need. I remember my grandmother needing to make the house accessible after my grandfather lost control of half his body after a stroke.
And those accessibility enhancements are not a problem even if they're not directly needed anymore: no steps between rooms, big sliding doors, lot of space for the shower etc. Even able people can appreciate those.
Like: build a house on only one floor so no stairs => no need for elevators later on. But it requires more floor space.
Give me a butt ugly but usable website/program over an overdesigned artwork with essential functionality hidden away to make room for even more pointless whitespace.
I guess folks who rotate their monitors to portrait mode would appreciate not wasting the entire height on a permanent scroll bar, but I like knowing how far I am into the page (not that that's really a true indication of where the page will end due to how large the modern header and footer regions tend to be nowadays).