It very easy to spot shady companies on Reddit, Twitter, and other social media, what they do is to create a promotion and then limit the comments to only the ones they approve and that is a violation of the right of the followers to drop their honest reviews about their services.

1xbits have a bad reputation and they are aware of it that if they allow users to comment on their promotion threads there will receive negative comments and for that, they will limit the comments their receive.