Run the numbers and then get back to me. Always and in all things, Follow the money.
Zero evidence of any of this.
Why do I bother? I'm not even going to find it for you, but go look up the Letter written by Captain Porter about his concurrent adventure to Ft. Pickens. For some reason he was expecting to be sunk. He says so.
It appears to be an obsession. It's certainly obsessive.
Unlike 1861 Confederates, who made no secret of their primary concern to protect slavery, no Union official -- none, zero, nada -- no Union official ever said they were motivated to war by the money New Yorkers had lost.
Their stated reasons were just as we were taught in grade school -- to restore the Union and then free the slaves.
And even if, somehow, you did find & verify the odd quote from some Union official, economics alone cannot be the major factor, just as they were not at Pearl Harbor in 1941.
The issues were much bigger than mere money.