...unless you mean to say that the word "Craft" is the word that MUST be capitalized, in which case (assuming the Devs support your homebrew interpretation) I will now declare Pathfinder an exercise in failure and move on to DnD5e.
(Really...any game that relies on THAT level of semantic interpretation to work properly is obviously a failure to anyone who isn't playing the game to win prize money.)
Or... You're just not willing to accept the rules as they are... And condescendingly implying that anyone who disagrees with your stance is "playing the game to win prize money".
Pathfinder is a great game, but it is not perfect. Some rules are poorly designed. The devs are not infallible gods. Sometimes they make mistakes/poor choices.
Master Craftsman is an awful feat. Deal with it.
What "rules as they are" are you referring to? "Rules" are written down and clearly delineated, otherwise, they aren't "rules", they are...at best..."suggestions", and the rules regarding what constitutes a craft skill are not clearly delineated anywhere.
It is interesting to me that this community is absolutely obsessed with RAW...until the community sees something that it doesn't like and can't account for...THEN it becomes and argument about "RAI" or (in this case) "grammar" (An argument, which is to me fantastically hilarious given that the context of this discussion is based upon a game of fantasy).
You are absolutely correct on two points: 1) The devs are OBVIOUSLY not perfect (I was assuming that they are human beings...), and 2) This feat is something that needs to be fixed with errata or in a FAQ of one kind or another. (No, you didn't ACTUALLY say that last thing, but I am trying to be magnanimous here.)