There are already way, way too many people on the planet.
SneerClub
Hurling ordure at the TREACLES, especially those closely related to LessWrong.
AI-Industrial-Complex grift is fine as long as it sufficiently relates to the AI doom from the TREACLES. (Though TechTakes may be more suitable.)
This is sneer club, not debate club. Unless it's amusing debate.
[Especially don't debate the race scientists, if any sneak in - we ban and delete them as unsuitable for the server.]
I suspect quite a few of them are going to be unalived in the next 30 years, given the way things are going politically in various countries.
Could be many millions, especially if Modi's India gets really bad and it overflows into Pakistan.
Still not enough to make much of a dent in the total world population though.
Nah, to do that you need widespread ecological collapse, famine, lack of clean drinking water, and ideally a really good infectious disease.