This seems like a common tactic with many of these employee activist campaigns. They partner with a sympathetic news media outlet that will amplify their story (examples: Vox, Geekwire, etc.) but leave out details and perspectives that undermine their push - like how few employees are behind it. If you look at past activist campaigns (for example people trying to stop AWS from working with the US government), it's the same story of trying to paint a picture of widespread support where there isn't any.
The assumption is that the employees will be terminated, fired, let go, or quit because creating unions is really hard in the USA, especially in industry which has no precedent.