DXB-JFK is over land almost 50% of the route, it will never make sense for Boom or anyone - you can fly subsonic to London and transfer to supersonic to shave a few hours off though - though shave off 45-60 minutes for transit buffer.

If they actually can get 4,250nm of usable range, you might be able to do something in Japan to SEA or maybe SFO, and that routing would make more sense probably.

But this is really really unlikely to ever fly - the physics and economics are so stacked against this until something really tectonic happens with how we store and use energy... but like not fossil fuels. It would need to be something that borders on "free", like if fusion existed, and was safe, easy and light.