The Gaians. They are snobs.
Aren't they all snobs?
Good question.
Yes, but I think the Gaians get to have it printed on their T-shirts.
I don't really see it...the Gaians aren't criticized for setting themselves up as the only "legitimate" authority, whereas the Peacekeepers are.
Let's also see what each faction says when you first run a social engineering system they don't like (before it reaches vendetta or breaking pact), or the one they do:

:
"Your exploitation of Planet's delicate environment is entirely
unacceptable, $TITLE0 $NAME1. Any market economy must be carefully
controlled to prevent permanent damage to the local ecology. I implore
you to desist from your free market stance at once."
"$TITLE0 $NAME1, your Planned economics are wasteful. More to the
point, your ballooning population and inefficient, polluting industry
will soon cause permanent damage to Planet's fragile environment.
I am sure your concerns are humanitarian in nature, but in the long
run your people will benefit from a carefully regulated Green economy."
"$TITLE0 $NAME1, your respect for Planet's fragile ecosystems
is much appreciated. I can only hope that others will follow
your excellent example."

:
"$TITLE0 $NAME1, you must surely realize that Democracy is a menace
to right-thinking people everywhere. Common citizens cannot be
allowed to question the decisions of their rulers! I urge you
to impose strict police control at once!"
"Have you no intellectual integrity whatsoever, $TITLE0 $NAME1?
It pains me to see an educated person pointlessly cripple
$<1:himself:herself::> with the pathetic fantasy of a creator
and afterlife. Will you not put aside medieval mythology and
join the rest of us in the third millennium?"
"You are most wise, $TITLE0 $NAME1, to keep your subjects under
tight control. The common man cannot be trusted to manage his own
affairs--democracy is the first cousin of anarchy."

:
"$TITLE0 $NAME1, your so-called faction is little more than
a summer camp for extremists and malcontents. Be warned that
I have heard your rantings about 'power' and I shall not stand
idly by while you build a private army to conquer this planet."
"$TITLE0 $NAME1, your open and shameless pursuit of 'wealth' is
offensive to thinkers such as myself. Perhaps you would be wise
to better conceal your greed."
"$TITLE0 $NAME1, your research facilities are the envy of the Planet,
and none can surpass the expertise of your scientists. I warmly commend
you for tireless pursuit of knowledge."

:
"Your Planned economy is wrongheaded and inefficient,
$TITLE0 $NAME1, and stifles the just and proper flow of capital on this
planet. I hope you will soon open your markets to a more realistic
model."
"$TITLE0 $NAME1, your impractical Green economics are causing
irreparable harm to legitimate business interests. I can
only hope you will not completely wreck our economy with this
nonsense."
"The health and vitality of your free market economy is to be admired,
my good $TITLE0. My congratulations."

:
"What evils are you cooking up under the guise of 'research' and
'knowledge', $TITLE0 $NAME1? You may be fooling the others, but I
know you are up to no good."
"$TITLE0 $NAME1, your shameless pursuit of 'wealth' is shocking.
Pray do not grow too fat and weak, lest someone decide to
carve you up."
"I am pleased that you understand the brutal realities of life
on this planet, $TITLE0 $NAME1. Military power is key, for only
the strong shall survive here."

:
"Your police state is godless and wretched, $TITLE0 $NAME1, and your
brutal crimes cry out to God for punishment. I pray that you will
find the Lord's salvation while your soul can yet be saved."
"$TITLE0 $NAME1, your so-called 'Democracy' is godless and
wretched. True freedom and happiness are only to be found in
God's love, and I urge you to repent your sins and open your
heart to the Lord."
"It is a joy to commune with a fellow believer, $TITLE0 $NAME1. I
trust your conscience rests easy in the hands of the good Lord."

:
"You may speak of order and security, $TITLE0 $NAME1, but your
Police State is nothing more than a brutal dictatorship, and a
slap in the face to all who truly value human life."
"$TITLE0 $NAME1, it pains me to see you supporting fundamentalist
zealotry at the expense of intellectual progress, human dignity,
and virtually any other worthwhile value. Let remind you that we
are living in the third millennium, and urge you to put your religion
aside as the relic that it is."
"You are a wise and benevolent leader, $TITLE0 $NAME1, to have
perceived the lasting benefits of a free society even in these
difficult times. My hat is off to you."
From those, the Gaians seem to be the
least snobbish.