But there's about enough housing for everyone too... Just that it's of houses are sitting empty across Europe, North America, and China.

And lots of the food wasted in those places (minus China) is imported from places with less food security, such as Brazil, India, and Morocco.
So it's almost like the energy use and infrastructure is already part of the problem and solving it would take less.

My point is that Malthusian was never correct, and the problems are ones of distribution. Not number of humans. (And Malthusian worries tend towards genocide naturally, that they've been shown consistently to be wrong should make them doubly suspect.)