At one time an x-server would appear to be a sign of excessive bloat, but now days I would bet it is one of the smallest, memory efficient, pieces of software on the system.
As to leaving it open.... yeah that's a problem. or perhaps not, it is an appliance that sits on your lan, if someone gets on your lan they get to use your appliance. sort of like saying "my stove is terribly insecure, any body could just get on and use it, they could even use it to blow my house up. it is criminal that the manufacturer failed to put an auth layer on my stove"
And conversely.... it is a radio lan. there are not hard boundary like with a wired lan. and to make things worse the infernal thing enjoys making open hotspots... so final grade... shoddy workmanship in the software department.
As to leaving it open.... yeah that's a problem. or perhaps not, it is an appliance that sits on your lan, if someone gets on your lan they get to use your appliance. sort of like saying "my stove is terribly insecure, any body could just get on and use it, they could even use it to blow my house up. it is criminal that the manufacturer failed to put an auth layer on my stove"
And conversely.... it is a radio lan. there are not hard boundary like with a wired lan. and to make things worse the infernal thing enjoys making open hotspots... so final grade... shoddy workmanship in the software department.