Oh, absolutely. Killing people is out of the question. Also pointless, especially as while
the population still grows, the rate is getting down.
And there is still hope that there advances
in the fields you mentioned will alleviate some problems. Artificial meat could have a huge impact.
But Malthus general idea is still valid and I believe that we are seeing the problem right now on this earth. Resources are definitely finite - even without humans life itself would use them up.
I’m actually not concerned about earth itself. We can certainly mess up the atmosphere and create a hot earth that’s so hostile to human life that we may die out entirely. But if that happens, we won’t dump any more stuff into the atmosphere and plants will reclaim their territories and ultimately the carbon dioxide.
