If they still went on with the championship then they might face consequences for illegally conducting an event.
@Die_empty can you share the source of what you mentioned in your post so that we can get to know the actual truth.
https://www.google.com/amp/s/www.dailymail.co.uk/news/article-12202461/amp/Porn-stars-walk-European-Sex-Championships-declaring-chaos.html
https://amp.marca.com/en/lifestyle/world-news/2023/06/13/6488bf1646163f9e048b45d5.html
It was an event gone totally wrong as I think this was the most bizarre of all International events I have ever heard,luckily I have not seen this as I honestly do not get the point of this when there are dozens of x web pages that could hold the tournament and the maniacs there could have seen it live rather than organizing it in Sweden.
Of course people including x stars would not want to perform in a show where not all analyses were paid by the organizers and also one of the contestant was not HIV checked as the article above was noting,it means this was a worthless effort that ended in the worse possible way for the organizers and the contestants.