I have three machines on my network that are used for web browsing, all running uBlock and Ghostery. Two phones that aren't used for much internet-wise. A couple other devices such as a HTPC.

I don't use Pihole, but I do use something similar for pfSense. I rarely mindlessly-browse the internet and I don't have any IoT junk. That said, my stats for 30 days:

  List            Blocked
  -------------------------
  pfB_IP1         35834
  pfB_IP2         17606
  pfB_IP3         150789
  DNSBL_Malware   4
  DNSBL_Ads       832479
  DNSBL_Trackers  26085

Note: The top three are various IP blacklists (99% of blocked is ingress). The bottom three are DNS blacklists.

It blows my mind every time I look at these stats and see how much they've increased... The data these companies would otherwise have on me. The data these companies have on everyone else. How much has actually gone through / missed / not blocked and rendered any of these efforts meaningless.

At the end of the day, I don't really care, but it's all pretty neat!