I think a little point made by the OP perhaps has been missed in all the to-and-fro about pay rises and average salaries to date.
It's certainly fair to say strikes impact the poorer end of society far more than the wealthy.
To exemplify: a cleaner who relies on the train to reach their night shift in a city centre will be paid circa £10 per hour. Strikes remove that service and they would have to pay substantially more for a taxi to the city centre or pay for parking. This could easily account for 1 to 2 hours pay.
An executive/professional sort in the same situation would likely be on far closer to £52 per hour (taking £100,000 as a low exemplar annual salary). To them, the cost of the inconvenience will be far less than 15 minutes pay - if they even used the train in the first instance.
Thus, the impact of strike action in rail transport has a disproportional impact on the poorer end of society.
I'm not, for a second, calling into question the right to strike; what I would suggest is that the government is clearly totally apathetic towards the poorer end of society AND towards the demands of rail unions. As such, the two could be seen to be broadly on the same team vs the current government. It could even be seen as a way of striking divisions within a broadly similar socio-economic group.
I think it's fair to call into question the ethics of this approach, however, is there any other viable alternative?