This is pretty standard these days. Mazda durarec for example, and i think pretty much everything works this way now. Mechanic just need to know how to use a torque wrench, which i know isn't a given... If you dont tighten it accurately to spec and it lets go, its not the engineering thats at fault!!!!
Renault and Peugeot are very well engineered, the trick is finding a mechanic in australia that knows what theyre doing. Just because its different to a toyota doesn't mean it crap. Just different.
These things come loose from the factory, it's a cost saving item, plain and simple. A lot of European cars are over complex and while they may work well from new, get a hundred thousand km on them and it starts costing you big time. The Japanese car makers are heading down that path, are no where near as bad at that.
For that camshaft alignment there's a $800 tool that is needed and that cost get passed onto the customer.
No different for electric cars, don't make them over complicated. It is far better for the environment if a vehicle lasts for 500,000km+ than needing to be scrapped (or major components of) at a max of 200,000km. They need to be serviceable and repairable, not disposable.
