No, it isn't. Stop normalizing this behavior. There was no consent. You expect that you are playing a game, not working for them for free.
That people suddenly wake up to the fact that they were dumb for providing labour for worthless virtual gifts doesn't magically allow them to claim it was abuse post-fact.
You can play these shenanigans with businesses, but I for one am happy such behaviour is illegal here when selling to consumers.
Anyway I’m all for outlawing the inclusion of predatory clauses in EULA but this is not one of this case.
People just want to have their cake and eat it to.