You realize that’s not exactly a ringing endorsement right? Everything you are stating as a negative has been a solved problem for four years.
Portability in terms of weight it might be close. But according to the reviews I’ve seen they run hot and loud.
Because of timing and layovers, I spent an entire day going from ATL-LAX-SJC. Not having to worry about battery life and actually being able to use it on my lap without having to worry about infertility from the heat was a godsend.