It's nonsense, just people who see something happen once and continue to make nonsense assumptions. "Last time there was en eclipse my power went out, therefore the eclipse caused it"
What's the connection between RH, Citadel, and Doge? Yes, it happened during GME, but they had a vested interest as GME short sellers and no actual connection between them and reddit downtime was ever established.
Now we're talking about crypto and making the same assumptions. It's no different than all of the kids on reddit with 2 months experience in the market who now believe they can spot a short squeeze coming.