Based from what I see on webtoons, if you are still on challenge section, most people will be ok with not many pages or even slow updates because well, maybe because not many people on challenge section.
But as soon as you are on official...
Prepared for comments like : 'If you didn't serious about being a comic maker then don't!' 'why are the pages is getting shorter?' 'we need more update!'
Try The Gamer, it's a popular webtoon and one of my fav but lately the page is getting shorter and shorter and as expected, a lot people complains 'why is the page getting shorter?' even if there is already a kind fans that explain that The Gamer is originally from Korean and the author have taking hiatus before because of their health so originally, the English translation have almost catch up to the Korean one.
Well, so my points is : Most webtoons have been translated from Korean to English which is why, they usually have a long pages and also a regular update and that makes most people who read webtoons is so used to longer pages and regular update [and well, if you are official you are getting paid there's also that] so yeah, prepared for 'shoooort' comments if you can't make longer pages.
But webtoons isn't that bad, the comments 'If you didn't serious about being a comic maker then don't!' is from one of webtoons from my own country so even if I link it here you won't understand the language anyway lol but well, this particular webtoons have picked from challenge into official and well, even if you do get paid for making webcomic, stuff do happens which is why this webcomic have taking some break hence why the awful comments. But there is also user that defend the author by explain that author is human too they might have situation where they can't draw.
So yeah, for every bad user, there is always a good one.
So well, try webtoons, it will be good for your experience.
[Wow, I make a wall of text, sorry for that '_' ]