I think the added complication on foilers and such is that ability to turn/tack/gybe takes a lot more effort than just tossing the tiller over. So a crash tack/gybe is much more dangerous as noted in several "close" calls in AC semi-finals and finals.

Forcing an error on the other team may cause them to drop off foils and practically stop, giving you no room to duck or drive over without major damage/injury?

That one Youth AC race where the boat banged the final gate is a good example of where some rules and distances need to be looked at.