honestly the real reason is that it used to be that people with no skills or intellect would die of injury, exposure, starvation, etc. and the weak would be culled by sickness and violence. It's a pretty brutal thing to say but this state of things helped filter the chaff, so only the best stock of people would survive the winters, famines, etc.
I'm not a genetic determinist but industrialization and medical advancement allowed far too many people who were stupid, sickly, lacking in skills to survive, and as things progressed these people not only survived but thrived. There's only a fraction of boomers who actually had any merit or skills. The majority are dead weight. I have a lot to do with boomers and they're fucking dumb and useless, not just with technology and "new" things, they're just useless period. They lived in a period where unreal amounts of resources and growth allowed literally anyone to have 4 kids. Boomers completely broke humanity.