Serious question: what do you think would be the better alternative? Especially when factoring in ease-of-upkeep (for the creator), convenient and familiar interface for the majority of users, Google's generally good uptime and server performance, and that a Google Sheet set to public access is not closed by a reasonable definition of that word.
I was going to quip about how I am annoyed that Google removed download-as-a-CSV as a URL endpoint, but it appears I misheard about this because /export?format=csv still turns the Google Sheet URL into a direct download link:
https://docs.google.com/spreadsheets/d/1wZhPLMCHKJvwOkP4jucl...