I agree! And the context of this is important, as you note -- as verbal constructions, racial slurs are more effectively offensive than pretty much any other available words, and one can often easily use them after just having looking at someone. And, after having these verbal weapons leveled at him, and being in a subsequent fistfight, he was essentially told that "boys will be boys".
This should tell you something about how the power structures in play deal with minorities.
The "boys will be boys" mentality has traditionally applied to all men involved in fistfights, not just minorities.
As for his friends, they might have simply decided it wasn't worth expending energy on a lowlife punk.
Also consider that racially motivated slurs mostly have their power when used against minorities, rarely the other way around.
You can, but you need to have convincing argumentation. The statement that "tech treats women like medicine and law did a century ago" is a blatant provocation.
Most of Horvath's story detailed a power struggle.
If your goal is to offend. Context matters, people. Stop deliberately trying to get offended by everything, please. It's not that I agree with offending people, but it's what the person in the OP's story seemed to be going for, and since racial slurs are highly offensive, they are very useful in that.