Instead, the film is trying to be a bit of lighthearted fun, while resolving all its lingering plot threads, while remaining true to itself. An old aphorism is "Comparisons are Odious"; us in the geek set sure do love our comparisons. "What's the best Star Trek film?" "What's the best space ship?" Even more informal and more personal questions of "your favorite [something]" can be irksome to me.
Some things don't need to be compared for us to find value. I don't need to compare The Voyage Home with Wrath of Khan. I can appreciate the one with the whales for itself. I certainly tend more toward the darkly dramatic, but there's no harm in having a bit of fun when fun is what you want.
And the cast, crew, and production team really wanted a bit of fun.
So give it a watch, Fedi, will you?