From their FAQ, emphasis mine:
You shouldn’t get one if…
You need a perfectly polished smartwatch. This project is a labour of love rather than a startup trying to sell millions of watches. There may be some rough edges (literally). Things will get delayed. Some features will not be ready at launch. Things could break. Things could not last as long as you’d like. The only thing we can guarantee is that it will be awesome and a lot of fun! Every time you look down at your watch, you will smile
So yeah, I’d say your take is pretty accurate. At least they’re honest lol
You might just be chronically tired or worn down from the stresses of life. It’s pretty common.
Another thing is as we get older a lot of people will choose more “challenging” adult books and then just be totally bored lol. I read young adult and kids books sometimes (how can I give a book to a child if I haven’t read it myself?) and it’s always surprising to me how they can be ripped through in no time at all.
But in general I think you’re probably right that literacy can decrease with disuse. It seems like most things about the mind and body trend that way