Not a big fan of this headline - it's inflammatory and incomplete. This is one (unproven and completely unsubstantiated) accusation from one side of the story, made in a handful of tweets. Kickstarter also tweeted, and of course denies this: https://twitter.com/kickstarter/status/1172230162588536833 The problem with this type of link on HN is that it's not a 'story' - there's no investigative reporting - heck there's…
What are the chances of three people trying to unionize in a company being fired in a very short span of time for 'performance' reasons? Are you holding out until the company says 'Ok, caught, yes, we did fire them for trying to unionize'?
Sounds to me like they saw the writing on the wall.