The articles specific wording is: " But employees say she pointed to two comments that called out “cis white men.” "
Calling out 'cis white men'? As though it's just a normal thing to do, because, you know, those terrible 'straight white men'?
Can you imagine if that statement read 'calling out those gay blacks'?
The lack of self awareness among those staffers at least on this issue is shocking.
It's definitely racist, and definitely a fireable offence.
Obviously, black->white/white->black racism is quite different, but it's still racism in the worst way.