"Is it simple and clear? I read about the case. Most past recess appointments would be illegal under this interpretation... and it is an interpretation albeit one with legal weight. It is subject to being reinterpreted or ignored when it becomes financially and/or politically expedient." - You answered the question: It is subject to being reinterpreted or ignored when it becomes financially and/or politically expedient. Using this rationale means they have no honor.

"And if you want to get even greyer the case was filed by a corporation in an attempt to protect their financial interests rather than being a case filed because someone was outraged that constitutional law was being broken" - Because no one in government had the courage to make this an issue.