Yes, Zacs, exaggerated insofar as the town is still standing. Not so far short of the truth if considering its economy.
Calais depends heavily on cross-channel tourism to keep many of its hotels, shops, bars and restaurants going. Recent reports suggest that many depending on that trade have either gone under or are on the brink. Some state their turnover is down by as much as 90%.
I have contributed to that decline. I used to either visit or pass through Calais three or four times annually. I gave up gong there when I witnessed an invasion of the port by migrants whilst I was queuing for my return ferry. To be honest I had thought of doing so before then as much of the town by then was off-limits.