Dana is damage controlling but I'm sure there is a hint of truth here. Khamzat was probably trying to train and shouldn't have, and probably did get emotional when he couldn't continue and coughed up blood in his hotel room.
But, the fact remains that prednisone is not causing him to cough up blood but the Covid is, which is very worrying this far out. As was his collapsing during training last week.
The fact that Dana says Khamzat will be back in June is complete bullshit... which is also worrying. He's toting the company line. The situation seems much more grave than that and we're not being told the whole truth.