> "here is a logical argument for believing in the Christian god"
That is definitely not the point of the trilemma. It simply argues that Christ must be placed into one of three categories, which do not include "generally nice and completely harmless moral teacher". He was clearly claiming to be God, which obviously leads to the trilemma of choices between Liar, Lunatic and Lord.
That doesn't say which one of those three to pick. Just ruling out the other possibilities by considering the claims he made about himself.
I don't know if that's true. Certainly there are biblical scholars who would disagree. It's not mentioned in the first three gospels, for example.
> obviously leads to the trilemma of choices
Again, not obvious. The three choices are logically incomplete. There are other possibilities, such as that Jesus was not a ful-on lunatic: he had a single delusional belief about his own divinity but was otherwise rational.
That is definitely not the point of the trilemma. It simply argues that Christ must be placed into one of three categories, which do not include "generally nice and completely harmless moral teacher". He was clearly claiming to be God, which obviously leads to the trilemma of choices between Liar, Lunatic and Lord.
That doesn't say which one of those three to pick. Just ruling out the other possibilities by considering the claims he made about himself.