It's not "newspeak" to suggest that Black people are treated differently than Asian people; in fact, it would be more surprising to hear that they aren't, since the two groups of people have wildly different histories in the United States.
And both face heavy discrimination and racism outside of the tech bubble of Silicon Valley, both historically and in the present day. To exclude Asians from the definition of POC is to disempower us because you consider one POC “more important” than another.
Indeed, we see this mentality in programs like affirmative action in which the suffering of Asian children is seen as an acceptable sacrifice for uplifting other minorities.