Um, well, they are first of all complying with the decision, in spirit. When someone has indicated to you, even in very diplomatic terms, that you may be unwelcome, it’s a reasonable response to stand right up and walk the fuck out.

Secondly I think they are doing it swiftly and abruptly to take advantage of this moment of public awareness. They want to create as abrupt a break as possible no doubt to maximize the outrage of their many millions of users and advertisers while everyone has the news fresh in their mind. They probably hope that this will create enough pain and disruption to stir opposition to the ban or at least political fallout for those who caused it.