This isn’t really specific to federated software. The client can go offline but the server can’t. Same applies to all centralized services. The only place this really applies is for decentralized (as in, no central points) systems, and those tend to have a lot of special sauce to make other people being offline less painful
It’s Saturday, only losers leave before the man burns (Saturday night). If this keeps up through late Sunday then it might start to be a problem. If anything this will keep out straggling weekenders.