i dont think this is a headcanon, more of an analysis and social pov, but jason's desire to protect SWs (which, personally i dont think he would be using pc language, they would be hookers, prostitutes, corner girls, working girls, etc.) should be personal.
protecting them out of the kindness of his heart is all well and good, and is probably a small percentage on why he does it, but a lot of jason's outlook has to do with duty, quid pro quos, and exchange.
people never forget that he was a homeless kid, and they never forget that areas like crime alley have a red light district, but so rarely do i see these thoughts married together. if ANYONE was going to try and protect or look out for a homeless kid, it would have been the sex workers. it would have been those girls that stuck their necks out and kept him alive.
and jason would OWE them. for the rest of his life (lives) he would see it as an obligation (there's nothing negative about this word, it is a weight he bears by choice) to protect them. jason's crusade to go after anyone making trouble with HIS girls, should read more like the little brother who's finally big enough to hit their abusive father back, rather than hiding behind his 5 foot nothing sister.
jason's connection to SWs should be seen as their kid brother who has gotten big and dangerous, but is still that little boy they held close when the heat was cut and all they had to give to protect him was their bodies.
everything they had.