No. That happens when people drive too close to each other and brake. Not when you let off the gas slightly to maintain a gap which prevents this exact thing.

The entire reason this happens is because 98% of people are morons who drive up the next guy's ass. If everyone kept a proper distance it wouldn't happen at all.

No, the person who wedged themselves into an unsafe/too-short opening created the shockwave traffic jam. But, yeah, that's the end result.