This is a pretty good unpacking of the concepts behind white fragility.

However, it doesn't follow that it's meaningfully true. People have your-kid-is-disrupting-class fragility. They have your-haircut-is-bad fragility. They have you're-putting-your-career-before-your-kids fragility. They have you-didn't-bring-enough-cornbread-to-the-potluck fragility.

Where is the evidence that "white fragility" is any more than "people are sensitive about being told they are racist"? Or, to flip it around, how is it any different from saying that if you're an asshole to people, even if you're right on some level, they won't like it?

Also, the presumption of reflexive opposition to every suggestion of institutional change effectively shields any bad ideas for how to help matters from effective criticism. So even if it's largely true, it seems like it's something you'd want to mumble quietly and then quickly forget while getting back to good arguments and promotion of a compassionate outlook.

So if it's personally useful to you to be able to address the real injustices in American society and institutions, that's great. However, as a general piece of accepted wisdom in society, I think it is overall harmful, and most severely harmful to the cause of racial justice, because it seems exquisitely designed to alienate the group with the greatest power to help things improve.