If someone intentionally makes a technically bad photo, prints it, frames, and hangs it on a wall WITH the intent to share/exploit the photo with others then it only takes one other person on this planet to sincerely like it......to make it art. IMO

I'm pretty sure that the best of the best art will have admirers and dislikers.

"Universal appeal" is probably unattainable. "General appeal" is probably a better word to characterize art that that gets over 50% approval from the audience that looks at it.

Art can not be bound by rules or it can not evolve.