Why would you expect someone who isn't willing to sacrifice their comfort for a $10/mo incentive to sacrifice their comfort for a $0/mo incentive? Deciding "I don't like this person's ethics" doesn't mean "this person is suddenly inconsistent": you need to check your knee-jerk responses :/.
Well, for one thing people will often do for free things they wouldn’t do for money. Imagine choosing between “i will pay you $10 to come to my party” and “i’m having a party, will you come?”.
Parties are supposed to be fun, so if someone offers to pay you to come to a party, that sends a signal that the party is not, in fact, going to be fun at all--otherwise, why would they pay you?
On the other hand, paper straws are a shitty product that are unsuitable for use, but if I was offered a significant discount on beverages that were served with them...well, I wouldn't take it, but I could imagine someone who was desperately broke considering taking it.
See, what you said is exactly the problem i have with mainstream climate solutions. The choice shouldn’t be paper straws vs plastic straws. The choice should be no straws vs straws. Similarly, the question shouldn’t be “can I run a/c slightly off peak” rather it should be “how can I run less a/c”. This applies all over the place. Electric cars have lifetime emissions that are lower, but in the same ballpark as ICE cars - if everyone switches to electric and changes nothing else, we still have climate change.