Imagine if your dictionary was constantly updated to modify your behavior

That statement makes no sense.

My point was that languages evolve, even though we write books and make dictionaries with fixed-in-time vocabulary lists. Similarly, langauges will evolve even if LLMs, for mysterious reasons, have a fixed-in-time vocabulary. I was responding to "and it locked their vocabulary in time, disallowing any further language blending".

Update your dictionary