Pihole and uBlock Origin have different purposes. Pihole blocks ad domains network-wide. uBlock Origin can remove specific elements from specific webpages with surgical precision regardless of the domain the content is served from, so it is a much more precise wide-spectrum content blocker.
In other words, uBlock Origin can block basically everything, but only works in your browser. Pihole blocks fewer things and less precisely but works for all your devices.
And they didn’t even hit the guy they believed to be shooting at them. Don’t get me wrong, it’s good that he was not injured for nothing. But with all that blasting, they didn’t even hit their target.