Personally, I think that a UX bug on Apple's side that they lost scrollbars and any hint of "more to see". As an iOS and iPadOS user I get so frustrated every time I discover a thing scrolls that wasn't obvious. I have observed that almost every iOS/iPadOS user (mostly subconsciously) "twitches" constantly over apps trying to find things that scroll. I wish Apple would provide at least
something of a better user experience here.
This is also one of the things where I'm disappointed that browser support for multi-column has only grown worse over time rather than better: I tried to intentionally set it so that there would be at least some next column "bleed through" horizontally in CSS and that (mostly) worked when I built the CSS theme but WebKit, Blink, and Firefox all moved to implementations that always balance columns evenly in viewport space rather than what the CSS specifically asks for. (And Edge Classic died, the one browser that really cared about good multi-column experiences.)