I posted the link precisely because it clarifies who the “savage” is. Franklin is not referring to the Indians specifically, but to the individual in general. He believed that individual rights (most exemplified in property rights) should be subordinate to the whims of the public.
I noted he referred to temporary houses and their ‘bow’. Those Savages he referred to were indeed the Indians. You only see the seed of Manifest Destiny there, not Socialism.