Version numbers can still be handed to people without having to appear in every single request. It is a deterrent, and not a solution. But it does prevent the

Version numbers can still be handed to people without having to appear in every single request. It is a deterrent, and not a solution. But it does prevent the clouds of botnets from labeling you as definitely vulnerable and attacking you the moment a new 0-day gets purchased. The speed of attacks can outpace your speed of your upgrade process. Security-in-depth should always be the way forward. This is just another tickbox you can use.