We’re happy to release a new version of Pi-hole core. With this release, please accept our apologies for the pihole -d command. You pointed out that it uploads some sensitive information without permission. We put a fix in place quickly, but we were a bit slow on the release.
The NBC app (or their live stream site) for watching the olympics isn’t that great to begin with, but throw is some obtrusive advertisements and it quickly degrades the olympic experience. This can be easily remedied with an ad-blocking Pi-hole.