Then why did he bother tagging main characters for each of the sequences?
I suspect the answer will be to serve as narrators, anchors or some such, for the audience to relate... but then the very idea falls apart because he failed to expand on the characters enough that the audience could really relate to them anyway, rendering the technique useless again.
He even presented the stories in a style that suggests they were based on real people, even though they were complete fiction.
In short - What the hell is he playing at?
Seeing as this particular storytelling tactic didn't work for you, it's sort of pointless trying to convince you otherwise. If you didn't like it, you didn't like it. Your criticism is neither valid nor invalid.