

It’s just that a majority of them now seems to be incapable of focusing on anything for more than a few minutes.
I teach chemistry at a college and I don’t think it’s any different than the past; it’s just more obvious. When I was in middle school, I would tune out all the time, but I didn’t have a smartphone, so I brought shitty fantasy novels to read under the desk. In high-school, I would tune out all the time, but I didn’t have a smartphone, so I would just leave or draw band logos. In undergrad, I would tune out all the time, but I didn’t have a smartphone, so I doodled or wrote song lyrics in the margins of my notebook. Even in grad school, i would frequently just straight disassociate my way through lectures when I ran out of attention span (so every 5 minutes or so).
There’s tons of pedagogy and andragogy research that shows that humans in general only focus for 10-15 minutes at a time (and it’s even shorter for teens and males in their early 20’s), and that’s remarkably consistent across generations. I don’t think people actually have shorter attention spans; they just have an easy way to mindlessly fill that void that is harder to come back from without an interruption. Frankly, my students from Gen X all the way to Gen Alpha students do pretty good at paying attention, but even my best students still zone out every few minutes, and that’s fine. It’s just human nature and the limitations of the way our brains are structured.
100%. The only redeeming quality of boredom is that it encourages you to go out and gain other interests and skills in the absence of other entertainment, but that’s more in the “I’m done with my homework and have nothing to do for the next 2 hours until dinner” sense. And even before smartphones, TV, booze, and weed easily filled that niche if you weren’t careful.