Contrast this to Mario Kart Wii, a Banana is a small obstacle on the track that can easily be avoided, the skill is in where you place it, not if you place it, and getting Triple Green Shells is three chances to hit someone, not a guarantee. Remember when sniping with Green Shells took skill? Well now they take up half of the track so if you get triple greens you're guaranteed to get at least one hit.
With how common items such as the Banana are in the race already, having a ton of them strewn around the track is a death sentence. Their size makes them more dangerous then ever when they're being dragged behind a racer. Items are huge in Mario Kart 8, sometimes feeling like they take up half of the track.
Items are absolutely disgusting in this game, so enjoy ten paragraphs of me complaining about Red Shells. I compare Mario Kart 8 to Mario Kart Wii a lot during this post, so this is why I have also put it in the title of the thread, however I do compare Mario Kart 8 to games besides Mario Kart Wii. The primary intent of this post is for it to be something I can refer back to when criticising Mario Kart 8, and can also be a way to see why people like the game or if they disagree with my points and why.