The way I see it (as someone who is wrapping up work on a page format monochrome graphic novel that I put a lot of time and effort into, but because it looks a little different and has a few more words, it kinda capped at 110 subs after posting weekly for 2.5 years) is that there are stories that do well on this platform because it fits really well into the needs and wants of this platform initially (and that initial response is really important!), and then there's stories that will take more work to get the audience to here.
Tapas really is just a place to house our stories, and so they don't really have a great way of getting the right people who enjoy page format to our page format comics--you gotta go offsite to do that on like Twitter or Instagram (which I just didn't have time to really do, being real. The page format people who do well here--with only maybe a few exceptions I can't even think of right now, get most of their traffic offsite).
Not saying that Scroll is inferior or superior, but just that the two formats are different because they tell stories a different way and for a different audience. In the end you have to do the format that is best suited for your story and for your audience because you are the one that knows the end goal. If your end goal is strictly going premium on Tapas and Webtoon...then yes, that's a problem. Front page picks must be stories that are easy to read on the phone--they don't strictly choose scroll format, but if you have a lot of small panels with small font, then that significantly lowers your chances of being picked. But if you're looking for print and patreon as your endgame...then you're fine. It doesn't matter. People who buy physical copies and who give to Patreon typically come from social media and other places you promote.
I've been there trying to half-ass two things and make my page format comic into a scroll format and it was hella bad experience--10/10 do not recommend. But, we're made of more than one story. When I made a different story that was really built for phone format from the get go, then it turned out good and it flowed really well, and it worked because that was my plan from the beginning.
So, I'm not going to lie to you, it is an uphill battle and it is very frustrating to be told "no, your format is fine" when every criticism you get is "It's not nice for the phone" and it's like Put the damn phone down I spent 100+ hours of my life writing this thing. There's no way around it, a lot of phone people who read on the phone will pass it over. People who have a hard time telling characters apart in black and white comics will pass it over. There's just no way around that.
But, if it means anything, the support you get for page comics like that tends to be really genuine. I've had readers who were really excited about my work because it didn't look like everything else. It really helps you push forward when you're making something that really speaks to you rather than try and fill a checklist of "what will make me famous".