What a terrible world we're barrelling towards when "LLMs don't know about it" is considered a blocker towards something taking off. Read a blog post, read a man page (which GP says was indeed their solution), or just play with the dang tool, I assure you these things are still possible without the assistance of a predictive text engine helping you!
One problem is that Stack Overflow isn’t being updated with questions about new tools because it’s been crowded out by LLMs, so the LLMs can’t train on these nonexistent new questions/answers.
This feels like the same question as in consumer goods: "do I buy this thing now, or do I wait for the potential refresh in 6mo to see if it's better?"
Just get the thing you need now, there's no promise the grass is getting any greener, nor that you're any better off waiting. Maybe the LLM won't learn for 6 months. Or 12 months. Or maybe the AI company will run out of money, or jack up their prices to where you're not using it anymore, or whatever.