I cannot explain how difficult it (once upon a time) was to DDoS Twitter, and I cannot even begin to fathom how you would successfully DDoS Twitter Spaces without affecting any other part of Twitter.
Spaces simply demands a higher data volume than most of Twitter, since its realtime audio. The system is underprovisioned and Elon shut a bunch of components off to save money.
The propensity of these kinds of folks to make up lies to play the victim is something else.
https://www.thedailybeast.com/elons-trump-spaces-chat-is-a-total-disaster