Was Hitler objectively bad?

[ib.me.ub]

I will draw your attention to Operation Sealion.

So, on 16 July 1940 Adolf Hitler issued Directive Number 16. It read, 'As England, in spite of the hopelessness of her military position, has so far shown herself unwilling to come to any compromise, I have decided to begin to prepare for, and if necessary to carry out, an invasion of England... and if necessary the island will be occupied.'

The Germans, surprised by the speed of their military success in Europe, had no detailed plans for an invasion of Britain with the man made responsible for the venture, General Franz Halder, now having to start from scratch.

But this absence of a plan did not prevent Hitler from announcing on 16 July that an invasion force would be ready to sail by 15 August. The operation was given the codeword Sealion.