It's not based on a grudge. It's based on previous conversations with Agrawal and him coming to the conclusion (along with Jack Dorsey) that Agrawal won't work with him to make the changes he wants to see.
'Changes he wants to see" like publicly declaring that the company/product is dying?
Jack Dorsey is trying to use Twitter as a foil to launch a crypto gimmick. Twitter's problems are largely Dorsey's fault so his opinion isn't reliable.
