well mise uses dotenvy right now (for env._file anyhow), it may be worth switching to dotenv-ng but I haven't looked into it yet https://github.com/jdx/mise/blob/fc441787fe52b46be1245046758...

I assume you just mean normal [env] in mise.toml which is different, but this still is relevant to mise

Yes - I think .env files are not a good idea (works for one person but even then it's not great)