I do find the iPad battery drain to be annoying and inexplicable. When they first came out, iPads held a charge for weeks in standby. New ones drain in a few days, even when background app activity and such are disabled. And you're right that it is frustrating to pick up your iPad and discover that the battery is near-dead, which happens with surprising frequency.

That critique doesn't apply to Remarkables or Kindle Scribes though.