Maybe we will want to send thisAn unsollicited avalanche message to all peers, even if they don't signal the avalanche service flagis not special in any way, so that non-voting nodes can add voting avalanche nodes.
Nodes with avalanche disabled can just ignore it (not check the delegation),compared to any other form of spam or unknown messages. so the risk is limited to increased network trafficSo just ignore them in the same way.