A few things I have observed... I keep hearing "scrolling is better for phones", "scrolling is better for phones", "scrolling is better for phones"... but I haven't REALLY seen that it is. I feel at most there is a slight advantage to scrolling on phones, so I don't really understand why there is a push to do ONLY that type. You will not get any recognition by Tapas or Line if you do page format which boggles my mind and frustrates me as a creator of page format comics.
I think it might be more so that it's more likely for amateur artists to not format properly and thus it looks worse on phone than on computer. When I have viewed my comic on my phone, it always looks great! Very legible and easy to follow and scroll back and forth or up and down and in the case of Global Comix, you can even scroll panel by panel!
Maybe it's also because I've been an avid manga reader for 20 years now so I'm just more used to it. There's also the fact that I can scroll through most scrolling comics in seconds which would take minutes to read in page format. I suppose they would rather take the Netflix model of binge watch as much as you can and quickly get to the next thing as fast as possible.
But I post here because there's an audience here and I would like to reach more people. If anything, I'd rather just get rid of Line because I honestly can't stand that website, but my comic has the most subs there. ;_;