Bro please first check The date of his tweet..He has said that on 12 February n and That time Everything was normal in Italy. there were only 3 cases in Italy ..Situation in italy started getting worse only after 21 February .Correct. He is well aware of the issue and it's seriousness, consequences as he returned from Italy where it was already expanded.
N He was expressing concern n fear over covid 19 before It started expanding ..
So yes he was really Very well aware N had actual idea abt covid 19 threat n its seriousness. But sadly ppl was only busy making fun of him..