I can't speak for others, but I have no intention of enabling piracy in any way; I just want Linux on it. Others will most likely abuse this for piracy at some point, which I personally find sad, but I don't control others.
Whether the details are published by the developers of the exploit themselves or by a 3rd party, it's frustrating to see the hubris of proving one's ability to explain the exploit winning out over actually helping the users hold onto the ability to root for as long as possible.
EDIT: Clarification, a few others already gave exploit code to use the Pegasus webkit exploit, and it's been going around the "news" sites. We just gave a prettier/easier to use implementation now that it was obvious Nintendo already saw it.
Additionally, this isn't a root, nor is it even close. This is the first stepping stone to be used by researchers to get deeper into the Switch and find new bugs. In no way will this impede the homebrew community; it will only serve to empower it.
It's really Nintendo's fault for shipping an insecure version of Webkit.
Of course it's not about practical reasons, since if you really need it, you can just get a normal Tegra based hardware without locks.