Placed in a spot that's straight up impossible to use while holding the device regardless of grip. Those keyboards are designed for the meat of your hand to be sitting right at the front bottom of the outside edge. They don't even sort of work with your hand several inches outside that. And they're equally impossible to awkwardly hold from underneath because the whole weight of the device is levered against you.
I don't think I've ever seen a device with more deranged ergonomics.