Personally I think the problem has arisen from choosing the word "smart motorway" and people associate that with it requiring less attention to drive on/significantly safer.
On a normal motorway he may have been able to get across to the hard shoulder, but as others have said, if this was a dual carriageway A road then the outcome will very likely have been the same.
It's about time the public and the media start blaming the driver for lack of awareness/attention to driving than blaming the road/infrastructure. The only caveat to this would be sudden extreme weather, but in this case people would reduce speed anyway and the smart motorway should pick that up and also drop the speed accordingly.
I think the problem is that you cannot have people using a smart motorway correctly because as soon as you have a lane that is sometimes a driving lane, and sometimes a hard shoulder, you introduce a moving goalpost that relies on people paying attention to how the function of those lanes change. It's effectively a context sensitive motorway that changes as and when traffic and conditions change. A broken down vehicle is now placed in the same lane as high speed traffic instead of separated by the traditional hard shoulder.
Combined with the lack of required stopping places, the inability of Highways Agency to run these motorways (eg 20 minutes to notice a broken down vehicle and change the lane signing, if those cameras are working at all), this makes smart motorways fatal accidents waiting to happen.
Your hypothetical driver might have the same issue on an A road without a hard shoulder, but there's a reason motorways were built with hard shoulders. The expectation of what you might find on the inside lane of a motorway is different from what you might find on an A road, and speeds and flow of traffic are different. I regularly drive up the A1/A1(M), and going through towns, junctions and roundabouts are quite different from the three or four lane motorway parts, even if sometimes the speeds are somewhat similar.
While you can try to blame all accidents on drivers, making the infrastructure more challenging to navigate instead of easier to navigate will inevitably cause more accidents. If we care about reducing road deaths, we should be making driving more safely easier, not harder. A good example is the roundabout. While it does govern the flow of traffic itself, it's main benefit is safety. Instead of having a crossroads or traffic junction, a roundabout forces a driver to slow and navigate a self-governing junction, and reduces accidents by some 70-80 percent compared to a crossroads. Drivers manage to deal with what would seem to be a more difficult junction, because that infrastructure itself is designed to help keep the driver safe. Smart motorways on the other hand were designed to prevent the government spending on building new infrastructure, with little thought given to the danger that has been increased for users of the motorway.
While it would be great for every driver to have a very high standard of ability, the reality is that isn't the case, and infrastructure has to be built to take that into account, ie be pragmatic and realistic, instead of designing to a standard that will never be reached. Smart motorways are building something assuming that no one will ever make mistakes, and everyone will react perfectly all the time, and that will simply never, ever be the case.