Bitcoin Developer Mailing List Migrates to Google Groups

- "Note we aren't relying on Google for anything critical here and are merely using them as a conduit for information that is already meant to be public."
- "We would like to encourage others to host public archives of the mailing list in addition to the gnusha.org/pi/bitcoindev public-inbox archive."

https://www.nobsbitcoin.com/bitcoin-developer-mailing-list-migrates-to-google-groups/ 

 Why can't they just use nostr or something? Why does it need to look like the internet when it was first ever invented?