Yeah, GOTO or global variables are usually a not so good idea... except in cases where those are actually the best tools for the job and any alternative makes code actually worse.

Coincidentally, the same applies to "you"

This is true for something like raw GPT. For the chat models that have been specifically optimized for "you" prompts, this is false. See the discussion in the link I provided, along with the leaked copilot/bing prompts.

Or, in other words, use a model in a way that fully takes advantage of how it was specifically optimized, from the intentional burning of massive amounts of compute time/money to get it that way.