I agree in full with you.
The decision is detrimental to all catamaran classes, even if some are likely to suffer more the others.
The most damaged is for sure the Tornado class:
the production of new Tornados is very likely to stop abruptly.
It is worth to be noted that ISAF President is the Swedish Goran Petersson and the only Tornado builder is the Swedish Marstrom AB.
I believe that this morning Goran Marstrom, presently in Islamorada for the A cat Worlds, is not very happy with the other Goran.
The quotations of used Tornado are likely to drop abruptly as well.
Another class to be hit by the decision is the Formula 18 class, which will lose the young crews aspiring to the Olympic Games.