I don't know that I saw Tae Su-Mi as the antagonist, or that she didn't deserve her government position... certainly she was a central figure for a lot of interpersonal conflict with various characters, and both a highly competent and highly ambitious person. The show does suggest that where a woman's family values collide with their career, choosing the career is the poorer choice which is a little unfortunate; but not an unheard of moral (hello dozens of 90s and 00s flicks about parents accidentally neglecting their children, etc etc). I initally expected Su-Mi to have abandoned Young-Woo because of her disability, so I was pleasantly surprised that wasn't the case, nor that it was ever an issue for her after they met.

The one person really saying Su-Mi didn't deserve to succeed was her opponent at Hanbada, who takes such calculating and shady actions - hiring Young-Woo just to have her as a political weapon! manipulating her old school friend, and being entirely willing to upend Young-Woo's life! - which makes me hesitate to say the narrative thought Su-Mi deserved punishment. But it may depend on how the second season goes from here. I hope the Hanbada CEO becomes a more openly concerning figure, because she very much is behind those closed doors!

I was definitely disappointed they didn't do more with the social justice lawyer arc though. I have my fingers crossed that this is early foreshadowing and the little lawyer family may yet break off and do their own thing in season 2, considering Hanbada is, as noted, run by a somewhat questionable CEO, facilitates the success of jerk employees, and forces the team to deal with unappealing cases.