there's two ways of looking at this
one - this is barely a step above something like Bum Fights, which reduced these unfortunate individuals to little more than entertainment. this instead just reduces them to a utility.
two - surely can't be very hard to mug a homeless person for their 4G kit and thereby net yourself a free, personal hotspot of your very own, ensuring you always have high speed data access, for free, until the operators work out which unit you stole and switch it off. And then you just beat up another homeless type and steal their kit again.
neither of these are particularly good for the homeless person