There is always tension between different rights, where one right is suspended in favor of a more important right. The right to free speech hurts other individuals all the time, but being unable to speak would be worse. If everyone was held to the bar you were previously thinking Magnus should be held to, there would be an incredible amount of lawsuits flying around. You could create laws that apply unequally depending on how much influence you wield, but that would require some sort of dystopian social structure (like China wants and has partially built) to accurately apply. Further, if that law was created and applied to Magnus, that could also extend to forcing him to play Hans, because the action of resigning speaks for itself. That's even more dystopian.
I only feel a little bad for Hans. All he has to do is deny it and go on his way. Rumors are always circulating about sports players and PED usage, politicians and dirty deals, corporations and backroom monopoly deals, etc. It's a potential price of being famous. The reaction is overblown because of the novelty, compounded by Magnus being involved, but it will eventually die down.
One of two things would blow it up into a bigger deal -
1. Rumors gain more substance, either from real evidence or circumstantial like Hans' board performance dropping. I don't think Hans cheats in board play, and even if he did he won't be able to going forward. Past evidence unlikely to exist, else it would have already been presented.
2. An organization bans Hans based on rumors, rather than the depth of reasons given by chess.com. This also seems unlikely; would require an organization to be idiotic in legal matters, or for them to have proof that Hans cheats, and the latter would have already surfaced.
