I am using @next/third-parties/google, and checking my lighthouse score I am getting this -

Using the minified versions of the scripts is a simple fix. For Example, we can use this script for YouTube Embed in place of the current one - https://cdn.jsdelivr.net/gh/paulirish/lite-youtube-embed@master/src/lite-yt-embed.min.js
I am happy to create a PR for this and thank you for this amazing project!