Fwiw, there are already some cryptos which use proof-of-stake instead of proof-of-work which overcomes the entire electricity consumption thing.
I do wish that places started accepting cryptos which were meant to be used for transactions (e.g. NANO) rather than ones like bitcoin that just happen to have existed for a while, but is technically inferior to most everything else.
Unfortunately, crypto in general challenges not just payment processors but the entire banking industry, and that's probably too much to ever succeed.