They could but in this case “spikes” doesn’t just mean the pointy things it refers to a specific design of shoe spikes (the shoe) eliminate pretty much all the

They could but in this case “spikes” doesn’t just mean the pointy things it refers to a specific design of shoe spikes (the shoe) eliminate pretty much all the padding and weight. And trade it for a rigid plate designed to put you on the ball of your foot for speed. It’s a trade off optimized for speed