My initial reaction was indeed very positive ( I take open protocol over corporate-owned fiefdom any day ). Then the obvious question came why this was released and how. Is it PR campaign ( Dorsey - and Musk especially - were being hit in press a lot lately ) and this is just one way to help their image?
I don't know. I would like to hope it is more than just image clean up.
That batch of messages in isolation are really promising.