It's not tho.
If you watch some really high level play (I'm talking actually well deserved PurePlats with no glitch use and similar bullshit) you'll realize the skill ceiling in Bayonetta is so damn high that the game has to put the "not sucking anymore" bar rather high as well. Did you die in some chapter? Well sorry but if you did, you kind of suck. It's OK, I initially had the game stop even counting skulls on the results screen. Did you spam items to get through some part without dying? Well sorry but if you were anywhere close to being good, you shouldn't need them.
I don't really agree with the ranking system punishing the player for skipping Alfheims and failing certain QTEs. It's a pain in the ass and I wish Platinum dropped this shit. Other than that, it's a pretty accurate measurement of skill. If you're on your first playthrough, and from your posts I assume you are, you don't really have a grasp on the player skill progression yet, which is why some posters here don't necessary take your complaints seriously. EDIT: plus what the poster above said. You made yourself sound like instead of improving, you're complaining that the game doesn't compliment you just because.