I spoke to many developers and they agree with me that you should do your planned maintenance work much earlier, at night f.i., so that everyone can work further without any impediments.
The argument that the maintenance dates are known before and we could prepare to it, is like preparing to the Dutch weather, sometimes you can not. While the planned maintenance from your side could always be planned outside the regular office times.
PS: today's maintenance did took from 07.00-08.25(!)
bump for everyone who is trying to work currently but is unable to do so because of the maintenance on the platform :)