[Beltalowda]

VimScript has been in development for 30 years now. There has been support for many other languages (including Lua) for over 20 years, well before Neovim was a thing. The idea that Vim9Script is only due to Neovim is one of those weird ideas that I will never understand.

I don't especially like Lua as a language (it's okay-ish, I guess, but not great), and I certainly don't think it's a good fit for a Vim configuration language, but it's okay to disagree on that. But it seems that some people are unable to comprehend that some people don't think that Lua is a gift from heaven for Vim.

Vim9Script is very similar to "legacy VimScript", but with slightly different syntax and typing. Overall, I'd say is less of a breaking change than Python 3 was, and it's not like Python 3 is a "new language": just a continuation of the >20 years of Python 1 and 2 before it.