When Western media freaked out over the suicides, Foxconn got scared. They started making their employees sign non-suicide agreements. What? That is the height of stupidity. If a worker wants to commit suicide, a contract isn't going to stop them. However, if a worker does not want to kill themselves ... it creates a new bargaining opportunity.
I have zero sympathy for Foxconn on this. They created the problem with a bad business decision, by explicitly broadcasting where they were vulnerable and making themselves even more vulnerable.
You don't need to be sympathetic with the workers either. They're just negotiating for higher pay in a unique way. Completely within their rights. Nobody is jumping. The ones who are going to jump won't advertise it or ask for anything beforehand.