The problem is that the manufacturers cheapen everything year after year, in an effort to cut costs.
So what once was considered good enough to tow something, is now automatically suspect, and what was once considered heavy duty, is now barely enough.
So now you have to spend more $$, or at least do some serious research, before you buy something as complex as a tow vehicle.
SUV's are supposed to fill a market niche, and that market niche is "family car".
That niche does not tow as frequently as truck people, and so the "family car/SUV" market research shows that, and thus it does not get the heavier duty components that trucks use (most of the time, not necessarily all of the time). So, you have to do your research.