I think it's like residential proxies. People get upset about "it's using my thing!" even though it has literally no effect on them.
Not everyone has the luxury of fully symmetric internet connections even in this age. Yes, my uplink speeds are absurd when compared to a decade ago, but when I ratio it to my downlink, it's still slow.
I have no comment on residential proxies. Somebody doing something in my name is unacceptable to put it very mildly.