Quoted from Aurium:
You guys are acting like this is the worst thing any company has ever done....
JJP promised this big elaborate triple spinning disc mech in Pirates and opening closing chest, They take it out on final release, the game is still great... That would tick me off more than something extra that's already in the game vs something I though was in the game when I put my deposit down... This UV light is not a big deal people
The difference is that you could still cancel your Pirates order if you didn't like those changes. JJP didn't ship Pirates with the triple disk and say "now give us $300 more to make it work". As a Pirates buyer you still knew upfront prior to shipping what you were getting, even if you didn't like it, from JJP. That's not the case with Stranger Things.
Overall people are just upset about the deceitful vibe from this accessory. Stern knew from the beginning that they were going to offer the UV light kit hence the UV playfield ink. They should have at least been upfront about it, hell that's the least they could do when charging $6k - $9k for a pin.