He promoted what he hoped to achieve. The studio ran out of money, and Murray took out a second mortgage on his house and put company bills on his credit card in order to keep the lights on long enough to launch something. Not what they wanted, but it was either that or shut down the studio and NMS would now be a sad footnote in gaming history. Did they make mistakes, did Sean handle it extremely poorly? No question. Was Sony pressuring them? We might never know. But I think it's clear from two years of tireless work on the game that their passion for this game was real, not a scam. I would think someone in the industry of all people would understand that things go south, lack of experience combined with contracts and corporations can result in things happening that are not at all what you wanted, and sometimes you just have bad luck like a flood destroying your office and months of progress.
This was a terribly ambitious game for 15 people to make in the best of circumstances, and they didn't get to the finish line. But even though Sean could've retired with $50 million in his pocket, the team kept at it despite the abuse and personal attacks to all of them, despite even Shu throwing him under the bus publicly. I have been in difficult development situations, but I can't imagine their crushing personal disappointment and the stress of people constantly hurling abuse on you and the people you work with, all while trying to work long hours every day in hopes that somehow you can make the game into something you can be proud of and something that lives up to the expectations of the community, and maybe eventually redeem the company's reputation.
You can say what you want about his blunders as a spokesperson or the things he said to desperately try to save Hello Games from imploding, but Sean and the team at HG has showed a level of perseverance and passion for this game and its fans over the past two years that has my utmost respect.