If the Union went on strike a year or two ago with claims(+proof) that the management was pushing down quality then I would consider the union to be doing it's job of trying to protect the workers from management like the claim was.

After a door falls out, numerous government audits and hearings, the union standing up and saying "Hey! Guys, we have an issue with management" seems to be a little barn door house.

The start of the thread was saying that union work is more quality than non-union. Child of that post claimed that union workers were the ones who missed the bolts.

If we want to claim that unions protect workers and improve quality(as opposed to those who say that unions are the reason that you can't get rid of bad workers) then the unions need to take timely action, not after.

However, the union strike is regarding pay and benefits. Not asking for better quality goals or production targets.