Leafo, this is interesting. Because when I first published my HTML5 games months back on itch they allowed scaling etc on my smart phone(Galaxy s7). Almost, as if viewing it on a PC. Is this something that itch.io is enforcing or is it the Android version of Chrome or Firefox deciding for the HTML5 format via the OS on smart phones.
I admit, I've been busy and haven't kept up with the latest changes to the HTML5 format in past 3 months. Especially, with smaller devices...