Great initiative and very generous! My pet peeve with READMEs: usage of excessive adjectives to oversell your project. Famous culprits: "blazingly fast" or software that is "beautiful" or creates "beautiful" things.
DHH had a funny line around Dropbox's "mission" in his 2019 railsconf video (linked to the direct point in the video): https://youtu.be/VBwWbFpkltg?t=2818
Dropbox's official mission as of 2019 was: "We're here to unleash the world's creative energy by designing a more enlightened way of working"
And DHH's remark was: "For fuck's sake Dropbox, you host files and make them appear on all of my computers"
Funny enough since then they changed their mission to be "Our mission is to design a more enlightened way of working" based on https://www.dropbox.com/about but it still doesn't come close to explaining what they do.