It's interesting that Odo was the autistic absolutist character of ds9, much like Data, Seven of Nine, T'Pol, Spock, Elnor, and Tilly.

They all (Except maybe Tilly) start with belligerent, absolutist puritan takes, hostile to all that oppose, and as they grow and learn and mature, they realize how complex things really are, for themselves, politics, and each and every other person. Many ST characters are like this, but there's always one main difficult autistic coded character. And they're never truly the enemy, but it would be too easy to write them off as such.

In other words, they slowly learn empathy from those around them who perpetually teach and give them grace.