"This whole idea that we can just get rid of formal languages entirely and replace them with natural languages isn't going to pan out; we have formal languages for a reason -- you don't have to guess the magic spell that will cause the output you want, you can get the output you want because you know how the system works"
This reminds me of Inform 7 (where you can use "natural language" to program text adventure games) and "visual" programming languages like Pure Data.
They are fine for simple things, but when you want something complex or want to debug something they can become a nightmare.
LLMs are currently better in many ways than Inform 7, and they'll likely get better still, but there will likely still be a role for formal languages. Fortunately, LLMs can take formal language as input as well, and with the addition of plugins, they'll be able to execute programs written in formal languages.