Reading the article and his definition of "black tax" I dont see anything inherently racial in it.
All of that speaks to me of diversity. A *blank* skinned person in a *different blank* skinned community goes thru these things.
Stares/whispers/suspicions, come join me on a site visit via train. It's not uncommon for me to be the only white person there and have half the eyes on me, while some clearly talk about me. This is a people thing. Not racial. Remove race, have 100 UT fans and 5 Bama fans in the same space and the UT fans will treat the Bama fans similarly.
Disrespect and incivility. Same instance as the above. It was a fairly common occurrence for me to get called out by my skin color for: walking faster, using the stairs, asking what time it was, standing on the train when everyone sat. I tend to get "checked" a good bit as well. And there is no way in hades I could get away being myself in those situations and respond with sarcasm.
This all reads as assigning racial values on individual instances.
I have said it before and will say it again. If all you look for is racism, all you will find is racism. Confirmation bias. Instead of assigning any individual blame to these situations it just gets lumped under some universal group think of racism. It certainly doesnt remove, or even decrease, the likely hood of actual racism but it takes that sin from some systemic magical force down to individual instances which usually have some basis that never gets looked into.
Just look at the conversation going on and ask if white people can honestly be themselves these days?