CiV had a touch-enabled mode. It didn't mean a great deal for the gameplay or graphics, did it?
I think the problem here is the assumption that "I don't like the graphics ergo it's obviously for mobile". Your opinions about graphics do not mean that it's obviously designed for mobile.
It means you have a particular subjective taste in art, and that your taste is no better or worse than anyone elses'. Learn to be more accepting of what other people might like. You don't see me complaining about how CiV's art style was too blurred because of the emphasis on realism. I recognise that what I like isn't what other people like, but I don't presume that what I like is best.
EDIT
You do realise that not only was XCOM ported to tablets without sacrificing any of the experience when played on a PC, but the development pipelines for these platforms are actually different?
You don't sacrifice things from the PC platform. You build the PC platform and then cut the mobile platform down to size. I work in mobile software development, I have a small amount of insight into the realities of how this actually works. People fearmonger way too much about mobile gaming (and I don't even do games), it's a depressing elitist kneejerk reaction.