Up until about ten years ago I was regularly seeing French cars driving around with dodgy lights/electrics.Reverse lights on while turning left and other weird stuff.The next batch of younger electric car buyers will have no memories of shit French cars.
I wouldn't take the slagging seriously about the French cars but if I'm driving for a living I'm gonna buy the most reliable heap I can afford.Not many on here are able to maintain their own vehicles and cars are more complicated and mechanics aren't cheap.
The point about Toyota working with Citroen on the Proace is a good one.But I'll bet they took the engines and electrical systems and tested them separately to make sure they were up to their own quality standards before they'd put the Toyota badge on the vehicle.
As they all go Hybrid and fully electric the gap in reliability will narrow even further.