The Celtic manager was hauled before a disciplinary panel and saw a suspended three-match ban kick in after two television viewers complained about his language during last month's game at St Mirren.
And Lennon has warned the SFA to prepare themselves for a string of similar complaints in future now a precedent has been set.
Asked about the Hampden Park hearing, he said: "It is four hours of my life that I am never going to get back. It was a complete waste of time and effort.
"It sums up a lot of things about football in this country - petty, narrow-minded.
"There was a fourth-official stood six feet away and didn't feel I did anything wrong so I still think it is bizarre that on the strength of two complaints, from a game that was televised all around Britain, that the SFA decided to take this on.
"I am not going to lie about doing it, but that sort of language is used in every game. I am not condoning it but it is an instinctive reaction.
"What you have now, it has opened up a huge can of worms for the SFA. Me and my staff, what are we going to do? Complain about every manager using foul language from now on?
"You only need two complaints obviously before you are hauled up before the SFA so there is going to be a big, big queue of people outside Hampden."