What are you on about? Diversity in the makeup of a group isn't the opposite of the ability for a group to unite for a common cause. Being employed in the same industry is already more than enough to practice solidarity, e.g. unions. I cannot fathom how one would bring a diversity argument against a statement like "workers deserve better protections".

Your argument sounds like a stepping stone for racism and anti-diversity rhetoric to me, and I vehemently disagree.