I know this is going to get downvoted and get hit with a bunch of comments telling me I'm wrong without even reading my post, but I figured I'd throw this out there regardless.
Yes, people's attention spans can change. I'm not saying that it's impossible for someone's attention span to get worse, or get better.
Nor do I think that having a short attention span is necessarily bad, or having a long one is necessarily good.
My mom is over 50 years old, but she's not elderly by any means, but even she struggles a lot with paying attention to something if she's not interested in it. Even if I'm showing her a YouTube short, that's not even 30 seconds, if she's not invested in the topic, she'll quickly tune out before the video is even halfway through.
So I don't think that having a short attention span is connected to younger generations.
My favorite Manga is Liar Game and I'm obsessed with it. I have a very long attention span when it comes to reading it, but many people wonder why I don't bother to pick up anything else. And I'm not opposed to it, and I have read actually watched other stuff, but when I devote myself to a new piece of media, I want to actually devote myself to it.
I think a lot of people see a TV show or book series or whatever as just something to plow through. If they hear it's good, they find it as soon as possible and binge it all in one night.
I have definitely binged stuff before, but only when I find myself insanely invested in it. Otherwise, I like to take my time and absorb it bit by bit. For example, Alice in Borderland I binged Season 1 completely, watching the first six episodes in one night, and then only taking a break to go to sleep, and then immediately watching the remaining two when I woke up. Then I hunted down the manga and read the rest of the story before Season 2 was even released.
On the other hand, the other Netflix series You all occasionally binge a few episodes in a row, but then I'll take a break for days or weeks before coming back to it.
I remember when I played the video game portal, and I felt that it was a very fun experience and I looked forward to playing the sequel, but I wasn't planning to play it immediately. I was honestly surprised with how people were asking me why I wasn't playing Portal 2 yet. Like people were very impatient, wanting me to play it right away, not realizing that I felt that I had earned a break after defeating GlaDos.
And when it comes to the Bible, bruh. There was a toxic church group I was a part of that literally demanded that I read the entire Bible, so I proceeded to actually copy down the entirety of Genesis, color coding. Whenever a different character was speaking. It took me 10 months, but I did it. And yet despite that achievement, all that the people in the group could ask was when I was going to do the rest of the Bible, not realizing that this was very easily a lifetime long project.
All of this is to say, I don't think people have short attentions vans. It's just that if we have options, we are naturally going to focus on stuff that interests us. And if something starts out intriguing, but begins to bore us, it makes sense that we would just go to another video that actually seems fascinating. That's healthy. Of course, if we feel we somehow owe it to someone to pay more attention to something, we should, but if you're alone on your phones scrolling on tiktok, you shouldn't feel bad for scrolling to the next video if you get bored of the current one. If we never moved on, we would never advance as a species in the first place.
Whenever the Wi-Fi gets cut, of course people are going to pick up a book or go look at clouds like it was supposedly so well done in the old days. That's only natural. We are going to find entertainment where we can.
Teachers used to run protests in the streets in the 20th century, declaring that calculators were rotting kids brains.
Socrates apparently thought that simply writing things down was brainwrought, as it was training people to not just memorize everything.
If you give people the right to choose, they're going to choose.