Communication is a behavior and act, not a personality type. The suggestion here is that it's ok for someone who doesn't communicate well to be accommodated in the name of diversity. The notion of "poor communicator" as a personality type doesn't jive with me.
Replace "communication" with "data modeling" or "project management" or "reading". There are plenty who don't necessarily possess those skills.
Should we expect that others shouldn't develop skills in those areas (assuming they are important for their role) in the name of "diversity"?
While I don't fully agree with the parent of your reply, I think they're right about communication being a skill. I am an introvert myself, but I've learned not to let that get in the way of me communicating with my colleagues or friends.
Not speaking up in meetings doesn't mean they don't have this skill though. Some people (like me) don't like to add on-the-spot opinions on something, but prefer to go and mull it over, look into it etc before providing feedback. Doing it on the spot often leads to a lot of wasted time and overly long meetings. Meetings and other synchronous communications are, in my opinion, very wasteful and expensive.
Replace "communication" with "data modeling" or "project management" or "reading". There are plenty who don't necessarily possess those skills.
Should we expect that others shouldn't develop skills in those areas (assuming they are important for their role) in the name of "diversity"?