IMO it was not a so nice idea to remove PUID from artist edits (MBS-2099).
I don't know who is Mason but we can filter out PUID edits if we don't want to see them.

But they are definitely part of an artist edit history

They could be optionally or completely filtered out of e-mails (as well as ISRC edits) if people who use e-mail prefer it this way.

I personally prefer having all edits attached to artists with a default filtering out.
This is my IMO.
I need to find PUID edits in artists like we can do for ISRC and AR edits.