The claim isn't true because there are a lot of contributors from all over, not just with some that have an association with Blockstream. Anyone can submit code for the project, it isn't closed-source. They are trying to paint this like its some corporate takeover, which is ironic since the "New york agreement" was a closed-doors affair that no one wanted - aside for the participants.

(Core wasn't invited, either.)

I don't like those tactics, so I'm very leery of the entire SegWit2x/NYA effort. It seems to be manufactured drama for drama's sake.