Few reasons. A. It probably went under UEFA's radar for all those years. B. I've never heard of Dundalk. The UEFA representative probably didn't either. And if he has, I doubt he's aware of their history. It happened now, and he deemed it a political statement. Which it is.
That's why now a fine.
You've never heard of Dundalk, despite meeting Liverpool on several European nights in history and being affiliated with LFC for years including the signing of Steve Staunton and hosting the Reds annually in pre season friendlies.
Also Dundalk are historically a stronghold of LOI football and have enjoyed many European soujourns I to UEFA competition over the years including (fingers crossed) next years Champions League.
Which I would imagine puts them firmly on UEFAS radar.
But by saying all that I'm going off topic and if no wish to have a back n forth with you.
Ridiculous fine.