I know it's bad to speak ill of the dead - and Bram deserves respect for his contributions and some of his political stances (I mean vim's charityware status). However, vim9 and some other decisions from him (like async mechanism) were deliberate attempts from him to create a schism between the vim and neovim user communities. Some of them were ideas he was initially not willing to accept and was proven useful by the neovim developers. Vim's choices were also not much better than Neovim's (often it's the reverse). The sudden explosion of neovim lua plugins is an example of this.