I have seen comments like “Welcome to collective bargaining”, a few (now-downvoted) posts like “They’re no longer Apple employees”, “Unions are good for lazy employees”, and quite a few posters offering their legal perspectives that essentially boil down to “Apple is right to make this choice”. The latter is more mundane than “Unions are bad”, but “Actions against union members are okay” is an opinion, not a neutral statement of fact.
I was once in a union local of several thousand people that was directed by the fewer than 20 who showed up to the meetings. I pushed for a campaign of greater publication of upcoming meetings and in a few short months, the meetings filled a decent portion of a 500-person room. The changes that came about prove that the democracy under which many of these unions operate can lead to changes that cause them to better represent their collective body of workers.
You can change your union, if you want to, and that's a beautiful thing. Your union shouldn't have a predictable political slant (which is what a lot of anti-union normal people dislike). It should represent the collective views of its whole body -- which was the whole point of unions to begin with: to represent its whole body.
So many posters will breathlessly run into the comments to loudly declare that “Unions are bad!!” instantly upon seeing the word. It’s as if too many pro or neutral opinions about unions get posted in row, a pesky Union will be summoned and materialize like Beetlejuice.