I don't doubt for a second this couple do this all the time on trains.
There is a message on the mother's twitter from someone on the same train indicating that couple physically pushed others out of the way to get on the train first.
But nobody knows what happened. Maybe the elderly couple did apologise and explain their reasons well. Maybe they took a last minute trip with no time to reserve seats, got on the train to find no seats apart from those 4 were free, sat down and when confronted explained they were unable to stand and maybe the woman with kids said she didn’t give a shit?
Of course anything is possible, but there is a witness account on her Twitter saying she was very polite in face of provocation; there is also the statement from the company.
Of course, can we ever reality experience 'reality'? Perhaps the unknowable nature of existence is why women should STFU and be nice.
I really don't know why people are still defending the couple.
I do. It's the same reason the CFs would not have done this to four big blokes.