https://usefathom.com/blog/google-analytics-seo
They argue that it's better (?) because your website will be faster.
"This is because Fathom’s tracking code is super-lightweight and blazingly-fast to load. Our tracker file is tiny whilst Google Analytics’ file is much larger. This is a little funny, because Google’s search engine rewards faster sites, so a case could be made that using Fathom instead of Google for your analytics could potentially increase your page rank in their own search engine!"