Originally Posted by dealt_with
Because you are coming forward and when you're moving it's harder to see someone else moving relative to you. It also requires higher levels of fitness as it is more fatiguing. Have you seen Vasyl Lomachenko? He bobs and weaves a fair bit, his defence is incredible while he does it. He is the only fighter I've ever seen who can counterpunch as he is moving in.
This was common back in the day. Dempsey used to do this on the regular.
People nowadays for the most part have no idea how to implement styles to beat your opponent.
The entire point of getting low and bobbing and weaving is to make your opponent miss and pay.