> Each relay has it’s own business rules and may or may not accept your events. Each client may support some type of events.

Even if they don't accept your events, you can still trivially saturate their bandwidth and processing.

> Explain to me how you trivially saturate this protocol.

Explain to me why you keep pretending I said anything about saturating the protocol

> That’s like saying you can trivially saturate TCP/IP by broadcasting packets.

And yet DDOS exists. Things like TCP tuning to avoid network congestion exist.