Have I ever been diving in a 3 knot current? Yes, a few times. Once at Wolf, once in Fiji, and a few times at Hole in the Wall. It's nasty and nobody should do it.
I'm not sure if your statement is referring to current in general, or at that specific site. Assuming you're generalizing, I have to say that current is manageable as long as both diver and captain is aware and capable of handling the logistics of it. I've done a live drop into a current that was estimated at almost 4 kts. As the captain was following our SMB during deco, GPS showed actual rate of drift to be 5+.
It's not something I'd recommend for new divers, but it's certainly doable with the right experience.