There is WAY too much DDOSing on OTservers. Simply because it works.
The fact that a single player can have the power to say whether or not you are able to host your own game is pretty terrifying.
Personally I would never DDOS someone, but knowing that it is possible, the only real way to run an OT Server is to pay a company that has DDOS protection to run your server on a dedicated host.
Honestly anyone who DDOS's a server, for ANY reason, should be ashamed of their behavior, and are not the type of person that should be in a position of power. (As they have already shown they will abuse power they have)