Hispanic racism is an advanced-level topic that most of the blue-haired know-nothings aren't prepared to discuss because they can't easily construct the requisite Oppression Pyramid. It's easier to lump them in with "Black" (er, "BIPOC") and continue parroting the canned factoids they were already regurgitating.

The ideology is primarily self-serving ("Look at me! I'm a Good Person!", "I'm a member of the in-group!") and isn't portable to contexts outside of the US' history of slavery.

They'd know this if they ever ventured outside the office to talk to the [often-immigrant] employees in the warehouses, etc. A discussion on racism/discrimination/etc between "uneducated" warehouse workers from five different continents is always more enlightened, lively, and subtle than any given group of white college grads (who mostly pat themselves on the back while agreeing with each other).