He has done absolutely everything you can do to accuse somebody without actually crossing the line into directly accusing them. His meaning could not really be more obvious.
(My bias: I think Hans' analysis is pretty dubious, but if it were anyone other than Magnus I would give these accusations little credence. I think we who are not in the know should be giving Hans more benefit of the doubt than people generally seem to be giving)
If he had ironclad proof, he'd hand it over to the arbitration committee / judges; it's not very professional I think to accuse people directly, even with proof.
Withdrawing from the tournament is the loudest accusation you can make without words. I'd rather believe Hans on this https://youtu.be/GSLM1K6O6aU?t=1507
(My bias: I think Hans' analysis is pretty dubious, but if it were anyone other than Magnus I would give these accusations little credence. I think we who are not in the know should be giving Hans more benefit of the doubt than people generally seem to be giving)