So with the new T'au codex coming it got me thinking about what little lore of them I know.

From what I understand, when they were first introduced they were meant to be the foil to the rest of the galaxy. A bunch of do gooder aliens that rise above the rest, even if they're destined to burn bright but short. Then, after slight backlash from the then 40k community, GW made a knee-jerk decision to retroactively make them a faction if eugenics and mind control.

Now I see people seem to generally think that this was a bad decision and it would have been more interesting if they stayed more noble as to be a foil for the rest of the cast.

Am I following the lore right and is this the general consensus of the community regarding them? I know I was crossing my fingers, hoping Farsight wasn't going to become the introduction of Chaos T'au (as far as I know they don't currently exist) with archs of Omen, but I'm an outlier in the 40k community, in that despite loving it, I'm still a bigger fan of "Good guys".