Their main complaint and ask here is not the "decoy group", despite the headline. That is because they can't meaningfully complain that apple created a non union group to hear concerns and give employees a voice (regardless of whether it did). Such a complaint would be hilarious.
Instead, the main complaint is that apple held captive audience meetings and wants the NLRB to ban them.
Instead, the main complaint is that apple held captive audience meetings and wants the NLRB to ban them.
As they well know, they are legal. The NLRB did ban them many years ago, and the supreme court overturned the ban. See https://en.m.wikipedia.org/wiki/Captive_audience_meeting
Whatever one may think of them, it will take Congress or States to change it, not the NLRB. Congress was very close last year on it, too.