Honestly, that is not the case. On various motorcycles I have personally without issue ridden over;I was on my way to work. and I saw this big dead skunk in the middle of the road. Imagine, if motorcycle is to run over it. 99.99% chance, he'd be flipped over and struck by other vehicle on traffic. Instant death.
Dead skunk, raccoons, half a freaking deer before... Nailed a whole live dear on my Hayabusa at 17 and Granite Creek, sent the deer sailing and ripped the front fender off the bike but I kept it on two wheels and got stopped safely.
Couch cushions, sheetrock, 2x4's, 4x4's, tools, rope, extension cords... On Hwy 680 I even rode right down the center of the rungs of a 12 foot ladder that shot out from under the car in front of me in my lane. I just lifted my ass off the seat and got on the gas.