I'm a little bit on the other end of this. I've taken strike action both as uni staff and when teachers were striking a couple of years ago. I am/was a postgrad student and affected from that side too as supervisions were cancelled, classes I was supposed to sit in wouldn't happen or worse, I'd be asked to cover and I'd have to refuse to as I'm also in the union but I also wouldn't have crossed the picket line.
It absolutely sucks to be striking because we just want to be doing what we're paid to do. As a teacher we were on actions short of a strike meaning we had limits to what we could do and that was horrible enough but not being able to teach my GCSE students before their exams was a killer when we moved into strike action. I made sure that in the lessons running up to the strike action that the students were comfortable in something that they could continue on with because it's not the fault of the students and they absolutely meant the world to me.
I'm not involved in the next round of strikes as I'm not currently teaching at uni but I voted in the previous ballot and I absolutely stand with them now. When something is constantly ignored and our education system is being massively affected, we're a bit stuck in what we can do and the universities know it so they push and push. If there was a way to take it out on the actual uni and not the students, the overwhelming majority of those striking would go for it. We don't like the disruption either but if standards keep eroding, there's not going to be much uni left in the future as everyone of value will just leave.
The argument that those who don't like it should leave is just a race to the bottom. Would you really want your university to be full of those who would accept less than acceptable standards just to stay in a job because all of those who value themselves and those around them have already given up?