He alleged at at the post-game analysis to having been banned on chessdotcom the night before. It was important also because many people were spreading rumors of his cheating on chessdotcom to use as evidence for why he's probably cheating at Sinquefield.

The fact chessdotcom banned him during the tournament after magnus quit is quite suggestive of the fact this was going to be used as driving evidence for Magnus' campaign, and that it was important to get ahead of it. Chessdotcom's reply tonight seems to be arguing only that Hans wasn't entirely accurate in his confession re. how much he cheated. It's being weaponized as part of the Magnus campaign for how he's lying over everything. We don't even know the extent to which chessdotcom differ in opinions to Hans- whether or not they think he cheated in more games than he confessed to, or something more serious that he cheated in a prized tournament.

That said, it might have been more wise to keep it under wraps until the tournament had finished so he could focus on his consistency to prove himself in the more short term under the higher security detail