There’s a reason for this
The flipside argument, though.
Blacks stopped being the largest minority group a while ago. Hispanic are going to represent a larger % of the country moving forward. Forming alliances with them and other current minorities may pay dividends in the future.
I will never use the term "person of color" to describe myself or any other Black person. I have more respect for people and their ethnic/cultural/national and racial backgrounds than to obscure it with the "poc" term.
I do see where people are going with it when they use it around political issues.