I don't know if anything is winning. I do have my preferences and others have theirs. I can tell you that reading on a tablet and reading on a phone are distinct experiences, even for text-only material.
Looking around, the younger generation doesn't do any reading on their phone. I see a lot of scrolling so probably social media or tiktok. The older generation doesn't do any reading on their phone as I see them carrying paperbacks. That's for the people who are still reading books(physical or digital) which seems to be diminishing every passing year.
Photography, is a different area. The more capable cameras on today's phones have sort of killed the mid-range market of cameras. As an amateur photographer, I haven't used my mid-range DSLR in a long time now and keep it for when quality of the image matters.
I do not get the "experience" difference for text-only, but I definitely see the difference for anything that require fixed-space fonts (code) or images.
I read plenty of books over my phone, though. Never been a problem. Also great being able to read on the bus while standing, which you can't do comfortably on a tablet.
As for paper books, I had to go back to reading a paperbook for something that's not sold in digital form and I found insane how bad the experience is. I like reading on the side and every even (or odd) page is a bad experience depending at which point of the book you are in, with being half-way affecting both sides.
Granted all the books I read are usually thick, so there's that.
I personally prefer reading on the phone: set a big font and there you go. Some books are terrible on it,but text only is great.
I read often in the gym between exercises and in the washroom. In both those cases I only have the phone with me,surely not a paper book