We might try to overpopulate, but without tech it would just create famines. The planet can’t feed nearly as many people with non-tech farming practices.
Any one read Marvel Comics as a kid? Stan Lee had a letters-to-the-editor section his each one and if a reader pointed out an inconsistancy error like this, and they could provide a reasonable explanation like sof these above, Stan would award the kid a very special prize… a “No Prize,” because- there was really no problem! He would even send the kid an envelope with “contents: a No Prize from Stan Lee” or something like that, but it would be empty. Those envelopes are collectors items!
I don’t know how rare my case is – but since I retired and had time to really start taking care of my self, I’ve taken up weight-lifting and mountain biking (and Beat Saber) and I swear I’m younger than I was 20 years ago when I couldn’t press 50 lbs. (I now press 170 – at 68 years old.)
You can blame tech if you want, but without that tech our population would be like one-tenth or less and we’d still be farming with horses and plows, unless you think making iron plows is also tech in which case we’d all be hunting and gathering.
Unfortunately, moderation is what nature forces on us when we try to do too much and nature says, “nope. Back up 100 years and do not collect $200.”