You bring up an interesting point. (Hi btw just popping in here lol) I'm in a weird mindset when it comes to these so take my thoughts on the matter for what you will. I guess it'd really go to show how much it depends from person to person but anyways here goes.
30-40 pages of manga content for one chapter consumable in roughly 5-10 minutes? Dope! 30-40 pages of webtoon content over one update??? Yikes. Like even if it's a fraction of that manga content, I dunno what happened but somewhere down the line, I just started taking in webcomics as a separate kinda format??
I'd be way more inclined to read several smaller updates over one massive update. To have it all in one spot would just feel so intimidating to read rather than inviting. And like, yeah, even if you could take a break in between and just pause and come back to it later... that's like.. idk it's a weird feeling. Like I'd personally feel like finishing the update would become a chore to do. And it makes no real sense, but that's really how I see it.
But again, I don't know how my tastes align with the average reader so