Does filetypes fully disable sending code to Github servers?

[krzkrzkrz]

At https://github.com/zbirenbaum/copilot.lua?tab=readme-ov-file#filetypes it says:

    sh = function ()
      if string.match(vim.fs.basename(vim.api.nvim_buf_get_name(0)), '^%.env.*') then
        -- disable for .env files
        return false
      end
      return true
    end,

Will this fully prevent Copilot from sending code to Github servers for suggestions when an env file is opened? Or is this configuration more about just disabling the plugin for this specific filetype (which assumes contents of the file are still being transmitted)?