For me it is inability to load any other website in some of my old button phones which I love. The loading problem on my phones is about missetting https on most of websites (I can not read google, wikipedia, and 99% of internets on my Blackberry).
IMHO the novelty factor of “learning something new” vs most other social media emphasize on empty content.
Inability of other websites
It’s a niche lens to view the world through. I am blown away by some of the genius on this site.
I am also amazed at how myopic people in the tech world can be and how detached these opinions are from “normies” of the real world.