thisNope it’s absolutely dangerous, that’s why it’s an automatic MOT fail if the steering light is on. It’s also been the cause of accidents, I believe it was ChrisUK who’s dad crashed his Mk2b Punto when the power steering failed mid corner.
What’s dangerous is telling people they can continue to drive a car with failed power steering.
Assuming your van is not and was not designed and built with power steering that’s fine but even if you have hydraulic power steering that’s failed it’s not safe to drive on the road as the steering rack and components are not designed to be used in that way.
Also if you are used to driving a car with the power steering you may not have the strength to control the car if the power steering fails, so if the eps stops working at speed it may come as a nasty surprise when you slow down for a corner or round about and find you don’t have the strength to steer the car and avoid an accident
A car with failed power steering will be a lot heavier then acar designed to be driven without it as they often have different rack ratios as well as possible stage from the motor/pump system
It also a bit of a shock the sudden massive increase in force needed easily enough time make most People brains freeze for a few seconds trying to think