Well...
UAL just ordered 15 planes from Boom, plus 35 options. We all know that airplane orders are a bit ephemeral but it does mean that someone objective and with the right background assessed the concept as workable. Also means that they're not worried about eco-politics blowback (the SAF part helps with that).
https://www.cnbc.com/2021/06/03/unit...upersonic.html