I don’t know the background of this story but any story about anything that goes against the SEIU is a good thing!
If you google something like “SEIU PJS houston lawsuit” you’ll get several articles that give a background. This was a classic, vicious Chicago-style campaign waged for many years (suit is about a decade old) against a private company, after the SEIU decided it wanted to unionize about half a dozen janitorial cos then operating in Houston, TX. Complete with false claims submitted to the NLRB, false claims and forged affidavits submitted by attorneys whom I hope will be seriously sanctioned.