Missing a /s?
Maybe I'm missing the obvious sarcasm, but why in the hell does a deluxe versions exist? You done screwed up your game if the game play is so tedious I want to pay for in game credits (rift crystals) instead of earn them. Hey they put in time sucks so bad your going to want to pay to make them go away instead of play the game.
This could be worse than anything else they've done. If they claim they own the data, are they then not responsible for it like newspapers? Is it in their terms and conditions they are free to do whatever with posted information, do they have the rights to edit users comments but in doing so become a content provider and therefore responsible. Kicking mods out doesn't land you in court this seems high risk to be manipulating content. Doesn't matter why it was deleted or edited it was deleted or edited who gets to decide what version to restore. Either you are hands off or you own the data and are responsible for it and upheld to media standards.
Edit: found a snippit of the terms and conditions in a German GDPR thread, It appears it is their terms and conditions that after you post it they can do with it what they like, even adapt it. Either way that's not a reason to be gone.