I have to say that I love vim, and super respect Bram and all the other contributors for everything that they have done for vim.
There just happens to be some technical choices in vim that I don't agree with / don't find appealing, where neovim happens to have made an alternate technical choice that I do agree with / find appealing. vim9script is one of them, which is highly relevant to the submission. I apologize if I came across as hating someone else's hard work.
My point isn't about being concerned about a specific issue with vim9script per say, it's vim9script itself. If Bram and a bunch of core vim devs were spending time on their _extremely_ valuable time on anything, the last thing I'd want it to be would be a vimscript offspring. That is just my opinion, and that is truly the extent of my opinion. Again, I apologize to Bram and the core devs if that came across as anything else.
I have used vim for more than 10 years now (neovim for just 2 of those years), and I expect to be using vim / neovim for the rest of my life. And having written some useful but niche plugins for vim, I felt like expressing my opinion here about the direction of vim / vimscript / vim9script wasn't unreasonable.