It's basically this issue in hyperkitty: https://gitlab.com/mailman/hyperkitty/-/issues/303
If we don't fix this. Seeing mailing lists archives will be broken because hyperkitty doesn't work without gravatar:
From: https://lists-beta.wmflabs.org/hyperkitty/list/test-high-volume@lists.beta.wmflabs.org/thread/TOFSYCOMTGUWZPXNZGGIK3TBRCYAKAQJ/
Enabling gravatar is not an option. Privacy Policy. One idea would be to have a small service as a proxy between gravatar.com and our users which would comply with privacy policy (and has been in several other places too). But that needs approval from legal and SRE before moving forward. If all fails, we can fix hyperkitty ourselves. It shouldn't be too hard.
