Something you could call racism would be the process of picking members for your group. If there were 2 White mages, a Galka and a Taru, you should pick the Taru because they have very high MP. Or if there were 2 Paladins, a Galka and a Taru, you should choose the Galka, because they have high defense.
Incredibly untrue, it really depends. If i partied with a Galka mage or a Taru tank that was incredibly good i will stick with that person the next time i see him seeking. Skill is much more greater than gear. That and usually a Taru tank and Galka mage have to be good. Outside of lvl 30, those races have to excel somewhat at what they do else they risk many things that will hinder them so usually a good galka mage is better than a taru mage with MP Conservation and not overnuking/etc because they know the dynamics more. Granted a Taru might know the same thing, but you for sure know that just about every galka mage would know it whereas you never know with a Taru one, and vice versa with tanks.

That and Galka tanks as PLDs....eh PLDs are the worst way to actually look at this. Their MP Pool greatly decides what kind of hate holding capabilities he/she will have and how their hate gain/mantienence be conducted. Of all the jobs i find that PLD is the job that greatly has the most difference between races and i find it to be the worst one to compare racially. @_@ A galka PLD will have vastly different gear from the medium (which is an Elvaan PLD for most) and will surely be different from a Taru PLD.