No because that would be like canning the WCML.
The solution isn't to just ban everything, but to take reasonable steps to ensure safety. Removing totally unnecessary droplight windows to prevent deaths seems like a pretty reasonable step to me. Operating on canals is now licensed and usually requires insurance, there are railings protecting people coming to towpaths from bridges from cycling into the water, etc.
Baffled anybody would really object to it to be quite honest, apart from bashers who want photos over the Glenfinnan Viaduct.
It’s worth bearing in mind that GWR was in the process of withdrawing all the relevant stock within the next year, so there was a clear period beyond which the risk would have been fully mitigated. So how reasonable would it have been to spend a fortune on stock which in the main was about to be withdrawn? (I don’t think the Castle Class programme had begun then, but again, that itself removed the problem on the vehicles that remained.)
I’m looking forward to the same Office for Rail and Road deciding that signalled pedestrian crossings must have foolproof barriers, to stop drunk pedestrians crossing when the red man is showing and thus putting themselves at risk.
I am in no way trying to defend GWR or any other railway company. And I consider that Network Rail should have taken partial responsibility for allowing the vegetation to become so bad.
I suffer from travel (motion) sickness, even on some trains such as HSTs (and class 8XX trains). So when I was feeling ill, being able to go and stand by an open drop light window with "fresh" air for a while did help me to feel slightly better.
Now, without the ability to do this, when I'm feeling bad, if i can hold it in, I have to get off the train at the next available stop. Recover, then wait for the next service. If I can't hold it in, well, the cleaners get some extra mess to clean up and I get to feel rotten for however it takes until I can get off the train.
So, IMHO, I think that over reactions are just as bad as inaction. Humans are really rather fragile. It is sad that a passenger lost their life. But people die every second of every day. And some people will do stupid things. I don't know how many incidents there have been due to people leaning out of windows of trains. But given the number of people who miss-use level crossings or which trespass on open railway lines, I would have thought that the overall risk from open drop light windows would not have been greater than these other risks to human life.
Please note, I am not saying that nothing should have been done.
Now, is the same Office for Rail and Road going to require road vehicles owners, drivers or operators to risk asses the power operated or hand operated windows in cars? In narrow country lanes, the vegetation can be very close to the side of the vehicle.
Yes, I know the speed should be lower (50MPH or 60MPH depending on the type of vehicle) than the 90MPH or 100MPH (depending on where exactly this incident took place) line speed at Twerton on the main line railway.