You can also sail on the Neoliner Origin as a passenger if you want to get a closer look: https://www.sailcoop.fr/en/our-crossings/north-america/
I think some of the "ride sharing" people are intimidated by the scary legal notices, when we tried to leave again after looking around a possible floating venue for my friend's big party she tried to summon an Uber (or maybe Lyft? One of them) and it did not result in ever getting a ride, but we eventually just booked an ordinary 20th century style cab out of the zone (the docks are sprawling, so walking out would take ages). This whole thing about paying €110 for a special taxi seems crazy. Is this normal in France?