[Mashiro]

This would help a bit if the automated attack would happen from a single or only a few attackers but I already mentioned that nowadays we have huge botnets made out of millions of devices including IoT stuff like webcams, fridges and etc... also even routers, of course normal computers and servers. So handling all requests from such huge botnets even if you don't get attacked by all bots is still a big load for the system (depending on its specifications). Small servers will break down under the load easily and quicker. A DDoS attack as we know it that is, actually. It has the intent to break the system and make it part of the botnet though instead of simply getting it to go down.

Think over the edge of the plate you are eating from.