Or, both people are stating the story from their side, and there is context missing.
Robinhood: "We switch off after discussions with the DTCC [about increased reserve requirements which we could not meet]"
DTCC: "It was entirely their decision, we never spoke to them about [the explicit actions they would have to take. It's definitely a coincidence that most other brokers did the exact same thing]"
Or, both people are stating the story from their side, and there is context missing.
Robinhood: "We switch off after discussions with the DTCC [about increased reserve requirements which we could not meet]"
DTCC: "It was entirely their decision, we never spoke to them about [the explicit actions they would have to take. It's definitely a coincidence that most other brokers did the exact same thing]"