I’m a Jersey diver and I’m guessing with your BSAC cert, we’ve both dove those conditions before. But totally agree it’s not what you would expect in Florida or the Caribbean. Up here, that’s a lot of our diving, except the part about Cuba.
No briefing is definitely not okay, but there are many ops in Florida that don't provide a guide in the water and basically serve as a taxi to the dive site.
It made for a memorable dive. We still talk about it and it was 2010! No hard feelings, but as johndiver999 said in his post, if they'd dropped a bunch of newbies in to this mess, it likely would have had a bad outcome.