I came here to say the opposite.

Is this the screenshot you're mentioning? https://easydmarc.com/blog/wp-content/webp-express/webp-imag...

If I received an email from google with text formatted like this. I would automatically have doubts it's anythig genuine.

While Gmail isn't anything to boast about UI wise. Google often have good enough an consistent UI patterns where this screenshot looks like there was no thought put into it past slapping a google logo on top.