I found the tag ‘POV’ is merged into ‘Male - POV’.
But what I think is those should not be merged.
My opinion is very simple.
‘Male - POV’ means literally POV of male and just ‘POV’ includes various types of ‘POV’s so ‘Male - POV’ is like subcategory of ‘POV’ which is not supported from current version of StashDB.
But I also agree with the opinion that ‘POV’ can be alias of ‘Male - POV’ because I didn’t see many examples of POV but not male’s POV.