One thing I learned about management is they are getting more than salary, usually there is a bonus or RSUs attached to everything they do. But they aren't working at 11pm for the good of the company if the good of the company isn't directly benefiting them. Keep that in mind the next time you respond to that midnight email.
> they go to the other dev who is happy to do it at 11pm.
Believe it or not this dev sounds like management material. That's not a compliment! If you think back to every belittling, sociopathic manager/director story you've observed or heard, these are the places they are formed. Now some managers are great leaders and you recognize why they are in that position. The majority are sycophants who kiss the right ass, by working at 11pm on a saturday.