What happens if?1. The LLMs are down, and you're on call and you need to fix a bug immediately (no mistakes)
2. You're working over serial (The LLMs aren't there to help you and only vi and emacs are available)
3. You're working on an old computer for some esoteric reason.
4. You're going in an interview and they (temporarily) forbid you to use an LLM to check your knowledge on using these tools (as well as programming tests)
If you cannot use these editors without an LLM, (Vim has navigation keys 'hjkl', G/g and so forth which many such tools have adopted), then it isn't a good look.
You don't have to 100% master them but knowledge of them will help when the LLMs have an outage, and there WILL be outages.
Also be careful not to keep relying on these LLMs too much otherwise your programming skills will atrophy. [1]
So the answer is YES, learn Vim, not to boost your ego, but make it a muscle memory so your skills won't atrophy.
[1] https://www.infoworld.com/article/4125231/ai-use-may-speed-c...