What do you mean “For that type of citizen”? There is no definable “type of citizen” that (after deporting all the foreign-born population regardless of citizenship) that gets you anywhere near the 100 million total unless it is something like “non-White”. (If you imagine that it something like US-born children of non-citizen parents, which is what most of the discussion of revoking birthright citizenship focusses on, that doesn't get you anywhere close.)

got it in one.

And, yes, I fear that is the strategy and/or plan. I am vehemently opposed, but I'm not sure how to effectively oppose this. I still have some hope for sanity on this from the Supreme Court, but that's the last line of defense that I see, and I don't have much influence there.