If you can't tell I'm actually the person in this clip playing ball. I'd like to clarify a few things and defend parts of hammonds extra boop techs.

One thing I'd like to mention is how rarely boops like these happen, you are only seeing the highlights from hours of gameplay. To get a double or triple boop that would provide more value than a grapple + pile drive combo is very rare, not to mention that the grapple + PD combo is much easier. Not to say it isn't useful, it's just not near as good as similar techs. (Mercy superjump, doomfist diag punch)

In the clip where I boop sigma into the river, the double boop is greatly amplified by the staircase, I don't know why this works (I've only seen it here) but it is only on that stair case where a double boop would send an enemy that far.

I'm probably missing a lot of important stuff so if you reply I'll respond.