Last time I saw this it was a tumblr post with the reply:

this is what competitive smash players sound like when you play with items on

Unsportspersonlike

The luck aspect has been somewhat balanced out in recent entries IMO. Being able to “block” certain items by holding a banana/shell behind your kart is a start, and the speaker thing lets you nullify a blue shell if timed right.

No items mode bitch 1v1 me bro prove it pussy I’ll put you in the ground