Just one more point to understand: Normally, strikes don't happen during a contract anyway - Most contracts these days have a no-strike clause, so with rare exceptions strikes happen after a contract has expired - or in the process of trying to get a first contract, like this one. For example, when we were bargaining at my hospital a few years ago, the contract expired while bargaining was going on and we had to chose between agreeing to extend the contract while bargaining, which meant we could not strike, or letting the contract expire, which gave us the added weapon of a strike to use.
Also, remember that what has happened there is a strike authorization vote, which is not the same as deciding to actually do it. An awful lot of contracts settle after the workers have taken a strong strike vote but before an actual strike. Some votes are taken with no real intent to strike but to use the vote to build power and put pressure on management.
Finally, just think about what you are saying, or implying, in this last post: Use those critical thinking skills that all nurses are supposed to have. The whole point of a union, what it exists for, is to make things better for workers. Can you figure out something that union staff would gain by misleading the workers into a situation where they would be fired? That would pretty much finish the union at that location and waste all the time and energy and money the union spent to organize them in the first place. Wouldn't make much sense to do that.