Your post made me look up the rule for keeping "who" and "whom" straight because I was impressed by your correct usage and wanted to learn to do it myself. Thank you for that.
Subjective vs Objective usage. If the action of the sentence is being done to [them], use "whom". If [they] are doing the action, use "who". Her use of "whom" is a little less obvious because she employs a relative clause and omits the antecedent to the relative pronoun (who/whom). The structurally "correct" (and I use that word with disdain) way to form the sentence would be to include the antecedent as follows:
...Those are pretty much they ( whom I like to call )...The bracketed section is the relative clause. In this type of clause, the pronoun will come first in active constructions even if it is the patient of the action (ie, the object). But nonetheless, the action is still being done to [them], and so you should use "whom." Compare this with
This is they ( who like to call me ) In this case, since [they] like to call [me], [they] are the agents of the action, and you should use "who".
The [bracketed] words should help to illustrate that (who/whom) is identical to the use of (they/them, I/me, etc).
Edit: I probably just made the PLA more active
Edit2:The Sequel: Nope
