The thing with Boom is that they are saying "we are doing this new great thing", and it's not new, Concorde did it. How are they specifically going to be better than Concorde? Just not using afterburners during taking off? Are they going to be cheaper? How? Just by saying they will?

That's why I understand that people don't care about this technology, because it's nothing new, and there's no proof Boom is doing something radically different that will solve the main problems of supersonic travel.