I agree with this guy. Just because some character has red hair in the naruto series, shouldn't immedietly give you the impression that they're from Uzumaki.Yes there is a chance but if you just go on red hair then Karin could be Uzumaki too....
You can't just go on one feature and make rash decitions like that..... So in turn yes he could but we don't know
Gaaras mom has light brown hair, and his uncle's hair is slightly lighter.
and where does it say that the uzumaki clan was dispersed?
We've already seen enough Uzumakis anyway, and if Gaara dies older than usual, then that'll be some more plausible guesses.