With neovim you're still dependent on plugins written in some scripting language, and their overhead can add up. Lapce plugins are compiled to WASM/WASI, so they should run a bit smoother.
Lua is not some random scripting language, it is designed for embedding and is very fast with minimal overhead. I'm not saying that using WAS* is bad but bashing Neovim when it uses the one of the best proven technologies for extension is just silly.
My point of view as well. Once you learned how to configure Neovim with all the features you need, there's no better IDE out there (except IntelliJ for Java), because none is as customized to your personal needs and preferences. The challenge is the getting there, but why should one leave it?