PC767
There's no point because the circumstances are completely different, and that contractual clause is talking about disruption not a strike. The very example you use has involved volunteers not compulsion - how is it remotely an issue?
Cabin crew - or you and me for that matter - cannot simply work on check in, it has to be learned.
As for your last point, I'm really struggling to see how you manage to make the logical leap to suggesting that I think all they do is serve tea and coffee.