No more so than, say, any Japanese parent is abusing their children when they teach them to fit into Japanese culture for example. And given how talented and successful Burhnam ends up becoming as an adult, I'm not sure how he and Amanda can even be considered bad parents in general.
A Japanese child is raised to be Japanese, the clue is in the name. Burnham was not Vulcan but human, a human who deliberately represses their emotions is not considered emotionally healthy. It would be as bad as expecting Spock to act like a human boy and ignore his telepathic abilites and anything that makes him Vulcan.
Sarek bought Burnham to the house to teach Spock empathy, so he insults his wife and insults Burnham. Amanda put up with a lot of shit to stay married to him. He uses his children as social experiments to impress his racist peers? Look how great that worked out!
I love the character cos he is so flawed.