The side routes were probably written close to the deadline and are of noticeably lower quality. The Tech Gian's summary of G sen had a dramatically different plot like a year before the game was released so they probably got lower priority in the rush to get it out. Read them if you like the characters involved in them, but don't read them because "you like being a completionist" Chances are they'll be the painful twinge at the back of your mind when you think about it later.
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You're messing with me! You're messing with me, aren't you!?
You're making fun of me, aren't you!? Aren't you!? You definitely are! I'll murder you!