The thing I don't understand is why the guards are striking given that the proposal is that every train will be rotated to have a guard, it's only that some of the trains will be able to run without a guard if there's not a guard available (late running train, sick, etc.).
Yes it is very possible that once this is allowed that the TOC would try to continue a roll out so that more services are impacted. However, surely that's a battle for another day.
Now it could well be argued that by allowing this that the strength of the Union would be weaker in future strikes, however SWR aren't rolling this out to all trains, there's still a lot of trains and routes which wouldn't be able to run without a guard. As such there'd still be a lot which could be done in a future strike.
With regards to passenger safety the difference between the two ways of operation is fairly small, in fact if you wanted to look at a better thing to do to ensure passengers are safer you could well look at ensuring that all guards are first aid trained. As there's quite a lot of cases each year where trains are delayed due to passengers being unwell. In fact those who cite examples of why we need guards often give the example of a driver suffering a heart attack, if a guard was first aid trained then they could assist the driver until further help could be sort (in the first instance other passengers to enable them to then deal with other matters). As with most things getting help fast is important if the guard had already taken a few minutes to get to the sick driver and then it takes another few minutes for a first aid trained passengers to get there it could well be too late.
Having said that, guards in SWR have a good reputation as they are very customer facing (unlike others who often hide in the rear cabs, and no I'm not just talking about on late night services when they could be at risk but rather during the evening rush hour) and generally are wanted to be retained by customers. Those who are guards shouldn't be got at for voting the way they did, or probably in quite a few cases for the way that other guards voted.
What was needed long before now was significant capacity improvements to the network, as not only would this have resulted in more guards, but it would have made the role of all the staff easier due to the network not being so rammed.
If we can't justify the cost of Crossrail 2 to provide capacity on some of the busiest lines and services in the country then we should be looking VERY hard at if we can even run the railways which we already have.
As I've highlighted before if SWT had the same level of subsidy per passenger as TPE then Crossrail 2 could have been paid for by now. That's not even allowing for other funding, increased ticket sales from the extra services, etc.
As others have said DfT have treated it as a cash cow rather than using some of that money to generate more money by increasing capacity.
With customers feeling that the DfT haven't improved things and that guards are making their life hard (different passengers will take different views on this, some being understanding as to why whilst others less so), then is it no wonder that SWR are finding it hard to run a sustainable franchise.