Maybe he's confusing Star Trek VI with Star Trek V. If he is I agree Star Trek V is weakly written and has stupid jokes. I don't recall Star Trek VI as being very humorous.
oh please.
What didn't make sense in the film? Well, if you say it is weakly written and has stupid jokes, that is your opinion. I happen to think otherwise.
It's not my "opinion", it's pretty much a fact.
1) Stupid Klingon dictionaries
2) the whole assassination attempt - how does Kirk know exactly what they are planning? Why does he throw himself onto the President
3) Spock finding out about how to track the cloaked bird of prey ("gas") which is nothing else than a deus ex machina
4) Uhurua who is suddenly - during the battle! - there to make a stupid joke when Spock and McCoy (why McCoy) are modifying the torpedo)
5) The lame non-sense escape from the Klingon prison
6) the non-sense search for gravity boots (which doesn't solve anything).
7) Saavik being exposed by the worst ruse ever, sickbay doesn't even have guards
8) what are the conspirators even up to? It's never explained.
9) Why is the whole business so urgent? It's a few decades they have left why the rush to make the treaty
10) why are Kirk and McCoy put on trial in the first place - just to let them be saved by Spock later... who is risking a war with that action!
... and so on...
==> Star Trek 6 is nothing more than a bunch of coincidences.