Though the man is certainly worth praying for (which he did not believe in!), his error was rightly condemned and officially opposed at Trent. Truth matters, and souls that were lead astray matter.
We live in an age of pervasive, corrosive and tyrannical relativism. The fact that modern Lutherans do not follow their forefather’s teachings reflects better on them and worse on him.
Look, the man was deeply, profoundly disturbed psychologically. Even those who fawned over him, such as Philipp Melanchthon, made mention of this within their praise of the man.
The fact that ‘saving faith’ is defined as faith which one believes will save them is utterly radical, not supported by scripture, and makes a mockery of the Lord’s constant call to repentance.
Despite the goodness of modern Lutherans, the dangerous errors of you-know-who must be pointed out since, last I heard, truth still exists and still matters.