If you use a phone app, there's warping in the environment. If you use traditional photoshop, there's no warping.
Trust me, I've retouched photos before. If you use traditional photoshop, there is also warping unless you know what you are doing. In fact, I'd go to say that the warping can even be worse unless you pay attention. another way to avoid it is to only make minor adjustments, which is what most people do. they don't go out of their way to give themselves an obvious alien figure. So, I guess you're saying that every other celebrity spends hours and hours photoshopping all their instagram selfies on a computer? OK... :giggles:
ofc magazines and ads will have photoshop... that's expected. but warping your body on instagram just seems sad and pathetic. and not to mention stupid.