I don't see a point in complaining about something that we cannot change.

If you don't like it, you are free to take your money elsewhere. We all are.

Maintenance happens.... even more so when a lot needs to be done. I cannot be sure WHAT SE is doing with these maintenance times, but I doubt they are just twiddling their fingers and singing jolly songs while they go on. There is probably a good reason, but they aren't being transparent about everything being done because some stuff is best kept unsaid. Sometimes a maintenance is done to improve security and fix vulnerabilities.

As far as others... I empathize. The maintenance times ALWAYS cut into my group's coil schedule. Every single week. It's frustrating, but it is what it is. I could say, "I wish they would do it during the morning -- while most people are at work," but that would make a bunch of other people with different schedules upset. There is no 'perfect' time.