You could literally say the same about the French revolution. At its core were liberal elites who wanted to build a pro-capitalist liberal society with an army of working class artisans. The big difference in the French revolutionary case is that some of their lawyers were extremist liberals who managed to whip their army of working class urban artisans/workers into a genocidal frenzy that later resulted in the rise of a popular reactionary/progressive hybrid thing under Napoleon. If anything, what kept the US revolution "sane" was that their liberal elites all shared a class identity that was very exclusionary. American liberal democracy existed to enrich a select few and had to expand itself to more and more people, while the French revolution was clearly more revolutionary. Although I guess another huge difference is that France was a centralized state that insisted on everybody following Paris and the US was decentralized so differences like slavery that would upset a Bostonian radical artisan could be easier to sweep under the rug.