Then why do you think Satoshi created Bitcoin? Just for fun? Did he do any marketing? Did he contact BTC/USD exchanges? None of that, it was not his job. He created a ground-breaking technology that was open for everyone to use. If it is useful, then it will be used - simple as that. The
community is what drives adoption. We are the community. So what?

Let's start doing it!
in an ideal world yes. The current world however is very different then the one where Satoshi developed bitcoin. First of all he had no competition and the initial bitcoin users were either developers or very tech savy people. It took him 7 years to get recognition from the general population.
Today we are in a world of get rich craze where everybody starting with the shoeshine boys are investing in crypto. These people don't understand much and have 1000 coins to chose from and they will chose those whose marketing screams louder. There is a very real risk of falling into obscurity even with the best tech. XSPEC might die and another coin may simply take over the code base and re-use the excellent ideas of this team.