It is not "beyond weird." It is a well-defended position in contemporary political theory and it has had many prominent defenders for hundreds of years. For example, in the 1790s, Immanuel Kant wrote:
It can still be asked whether, when neither nature nor chance but just our own will brings us into the neighborhood of a people that holds out no prospect of a civil union with it, we should not be authorized to found colonies, by force if need be, in order to establish a civil union with them and bring these human beings (savages) into a rightful condition (as with the American Indians, the Hottentots and the inhabitants of New Holland); or (which is not much better), to found colonies by fraudulent purchase of their land, and so become owners of their land, making use of our superiority without regard for their first possession. Should we not be authorized to do this, especially since nature itself (which abhors a vacuum) seems to demand it, and great expanses of land in other parts of the world, which are now splendidly populated, would have otherwise remained uninhabited by civilized people or, indeed, would have to remain forever uninhabited, so that the end of creation would have been frustrated? But it is easy to see through this veil of injustice (Jesuitism), which would sanction any means to good ends. Such a way of acquiring land is therefore to be repudiated.