, sorry but i don?t see those "many complains" you mention on webs (and i visit many webs, in spanish, portuguese, english, even russian)
as i can see, these complains are only few users, but most people (i fiture about 99%) is happy... no, very happy with the device.
note: if you looking for similar criteria, you will found problem even in Shield tablet, Shield portable, etc. there are always people with some punctual problems, and those users will generate more threads on forums that people that are happy with their devices. ^_^ (yes, i figure people happy with a device, is a user that is playing with it)
as i can understand, you don?t like this device, and this is ok. but people like this, is happy, and this is very good for everyone, because manufacturers like GPD is going in the good direction.