False. I bet the vast majority of content available online is now (think of pics and short videos) created on smartphones.
> They are not real network clients. Smartphones have powerful CPUs and fast network connections, except that you aren't actually allowed to use these resources in any meaningful sense, because doing so consumes battery power, and people don't want the precious battery life of their phones drained unnecessarily.
Falsy (maybe truee in 2016 when the article was written)
...
> They have led to massive centralization. Part of the “cloud” movement is probably driven by the fact that while smartphones have substantial computational resources, you can't actually use them because of battery life. So instead the computation is done in the cloud, creating a dependency on a centralized entity.
Maybe true
> They have ruined web design.
Nope, poor "mobile first" (aka let's apply mobile ui patterns to every other devices) ruined webdesign
> There are no secure smartphones.
True, like there's no secure PC. Or mac.