I'd probably make a vertical scroll comic if I made something more focused on drama or romance or maybe more sweeping, epic fantasy, but I find the insistence of current platforms that every comic ought to be long scroll frustrating, because Long Scroll is pretty limiting for comedy and action.
The whole "two panels on the screen at any one time" that Webtoon recommends, with big gaps between them would kill a lot of my jokes that rely on a quick whiplash between a setup and a surprising punchline.
Like if I were to follow those rules, it would be like between every panel you add about a second and a half. So between every panel, you have to count "one two" in your head. It just DRAGS. Like can you imagine watching Brooklyn 99 and before any funny response to something, Jake Peralta waits two seconds instead of the snappy back-and forth the series is known for?
Long scroll is great for some things, and it can do certain forms of comedy very well, like Beware the Villainess is a legitimately hilarious comic that relies on a focus on the protagonist's big reactions to things in her internal monologue, often referencing memes. But my comedic style is a lot snappier, more influenced by sitcoms, relying on a bunch of characters in a scene bouncing off each other. Lots of small panels with short gaps allows for a really snappy back and forth, or to control the pace of the speech in interesting ways, add pauses, add changes of tone mid-sentence.
It also in action terms is much better for this very "anime" style of fighting, where somebody charges up, does one big, spectacular attack and then everyone talks about it. You can't easily have quick flurries or any kind of mechanical complexity to the fight that's shown and not told if you're forced into a format where you can ONLY do big panels with big gutters.
Overall, it's not that I hate long scroll or I'd never use it, I just think it's a great new tool, but not a tool that's so perfect for everything as to render all the old tools obsolete.