Simple answer is there are no wind farms along the NJ coast yet but some think sonar mapping may be at fault.How do you know this hasn't been caused by the wind farms? Nobody has proved anything either way.
And why have so many whales suddenly getting hit by boats?
Another point may be I understand there have been much bigger than normal runs of fish off the coast that whales feed on since the Fall. This brings whales into conflict with shipping.
I don't pretend to know the cause of these deaths but think the fact whale strikes along the Atlantic coast have been increasing since 2016 may point to factors apart from wind farms. The question is whether that's the only reason.