You don't need to log in to read comics? You need them to comment, like, and subscribe but you don't need to log in just to read. That would defeat the entire purpose of the mobile app lol
There was a period in time where Tapastic had a front launch page that yes, you had to access either by logging in, or by getting around it by using a specific URL (that's how I did it when I just wanted to show people stuff super quick) but they've since removed that, probably because of the whole "logging in" thing. Tapastic's never been about forcing you to make an account just to read content (again, just to comment, like, and subscribe).
Could you get a screenshot from this user? Because if said user is just trying to comment and stuff and subscribe and all that, yes, he's gonna have to make an account, and I don't think that's too much to ask, as most, if not all websites do this.