If he himself believes he can achieve his off-the-cuff deadlines or not doesn't matter for the rest of us: he already proven himself to be a fabulist, and after so many failed predictions, should know better than to air them in public, especially as he must be acutely aware that making such claims inflates his and his companies' net worth, and hence has legal implications. Only he cares not about those, as none of his past misdeeds had any serious consequences to himself.