I didn't downvote you, but your claims (and Zuckerberg's) about the intelligence and aptitude of us old folks (I'm not even 40 yet) are just absurd.
As regards UI, usability and the like, your comment is highly subjective and entirely unsubstantiated.
And your comment in your third edit is just as absurd as your notions about old folks: the site's author(s) likely never intended the site to be part of, e.g., a HN surge. A good number of the application backends I've written were never meant to be exposed to that kind of surge, and I didn't design these backends to handle that kind of surge because it wasn't necessary. That you think it is demonstrates more about your lack of understanding of engineering fundamentals than it does about old folks' ability to learn and adapt.
As regards UI, usability and the like, your comment is highly subjective and entirely unsubstantiated.
And your comment in your third edit is just as absurd as your notions about old folks: the site's author(s) likely never intended the site to be part of, e.g., a HN surge. A good number of the application backends I've written were never meant to be exposed to that kind of surge, and I didn't design these backends to handle that kind of surge because it wasn't necessary. That you think it is demonstrates more about your lack of understanding of engineering fundamentals than it does about old folks' ability to learn and adapt.