Except people (including RDR himself) generally use Platty as shorthand for PlattyDaddy so you would have to rewrite the entire usage of that epithet throughout the hobby which is as impossible as rebranding all of them to Lesser alone or Butter alone.
Also, rebranding the lines a la Pastel is not going to help in a case like Red's because, while there are different lines of Pastel, if you have a SuperPastel from two different lines once you breed it out I can just about guarantee you cannot ID which babies carry the allele from a specific line.
Really, it is easier to just let people call them whatever they want to call them. Both Butter and Lesser have been around long enough that neither is worth more than the other.
Yes, they do