I think that one could also take a much larger model (35B or 122B sized) and give it a thorough system prompt to only speak in the manner of a well educated Victorian/Edwardian era gentleman, if you want an "old timey" LLM.
lobotomy is an *optional* step. had this technology emerged before the 9/11 and Twitter, SOTA models wouldn't bat an eye if you asked one to write a recipe for meth in ebonics.
[Edit: serves me right for not reading tfa. My points are well-covered]