I will preface my comments with the guess that I am much closer to the topic than many here. Not bragging, but it happens that I am involved as a parts supplier to BOOM Aero, as well as being an aerospace engineering/sales manager for more than 35 years.
First I think BOOM is a great name... whatever. They do still need to prove themselves and my company is supporting the best we can. I know a few of the execs there. I have visited their facility in Englewood, CO multiple times. They are not scam artists... they are trying to advance aviation. Pooh pooh that?
The fact that they are plotting out an assembly line in North Carolina is exciting news. For those of you that might be interested in learning a little more about BOOM...
boomsupersonic.com
As some have mentioned, the noise/damage of 1970s technology supersonic aircraft limited their application. Cost per passenger seat mile was also extremely high. I could go on.
Now 40 years later, why would you not applaud entrepreneurs/engineers pushing the envelope? Cutting 8hr to 10hr trips overseas in half is a huge step forward. It's all about efficiency and speed to get things done. Yes, it will first suit business and the 'well to do' first. Just like propeller commercial flight did almost a century ago.
And hey, if better 'household' items such as Velcro, Tang, Sideview mirrors (Indy cars) come out of it... awesome byproducts!
Know that material and processing technologies are quite advanced compared to 40 years ago. Does that not intrigue you as to what we can do?
When your internet is slow or your cell connection is spotty are you frustrated? Do you say I would rather just go back to stationary land line phones and Encyclopedia Brittanica? For those of you that are satisfied with the current state of affairs... raise your white flag and watch it go by... faster than a speeding bullet.