Add functionality similar/same as existing plugin https://wordpress.org/plugins/simple-local-avatars/
I vote leave this as a plugin. No need to stuff into core.
I vote this replaces gravatar.
Because there's already avatar functionality built-in, I'd say this was plugin territory...however, I think replacing gravatar with local avatars is a great idea.
I am not clearly for or against it but we must consider that Gravatar is another GDPR "headache". It is one of the third party applications/services where user data is sent. Keeping it local makes everything simpler.
That's a great point, @Chris.
Agree with the comments that this is plugin territory.
This should replace Gravatar.
Stripping out gravatar would be great, but I don't see any need to replace it because many users have no need for avatars on their sites.
Should replace Gravatar.