This artist has changed their name and launched a handful of new webpages to replace the pages under the old name

Bringing this to attention, should we consider updating so it's just one tag, not two tags for the same art? I think that would be classified as a tag "update," not an alias/implication, right?

Feralsoren https://e621.net/artists/58793
Pseudonymh_(artist) https://e621.net/artists/76078

P.S. maybe the name should drop the _(artist) part, since the tag just "Pseudonymh" appears to be untaken

Aliasing an artist's old name to their new one when they rebrand themselves is certainly something we have to do on occasion. See topic #37175.