It's Game of Thrones and it's not really an argument. This show was a cultural juggernaut, every week the whole internet watched together, it was endlessly quoted, children were named after the characters, and no one brings it up anymore because the last season was so awful.
I'm kinda convinced that Ariana method acted Glinda so hard she started falling in love with Cynthia the same way Glinda fell in love with Elphaba so she had to act quick and the only other straight option was SpongeBob