How is this a meme?

Back then the ideological split inside american settlers was between actively killing all natives or putting them into reservations to left them naturally die off over time - as they were "evolutionary obsolete". In fact the bourgeois revolution of the american landlords was started because the British tried to limit american settler expansion and the expansion of slavery into Creek and Chickasaw lands.

The idea of not killing off natives was never present in any large capacity in the early united states.

Didn’t Mexico own a lot of that land in the Southwest?

Isn't it fair to say that Native Americans didn't consider land to be "owned" by anyone? What colonialism (and agriculture) did was assert control over land that was previously thought to be communal.

The tragedy of the commons is a capitalist invention. Shared resources have all been managed effectively until the point where they become considered private resources.