Pi-Hole: Are PTR from odd ip address a securiry / privacy concern? I've blocked them

I have blocked ALL pointer records from anywhere, local IPs, dns servers and odd, spaced out ip addresses that look really strange like 9 8 7 0 etc with dots in odd places, don’t know what is, or the origination.

Sure they are blocked but what are they, and could they comprimise my network setup privacy by allowing a server to discover my domain blocker? I did a quick search but didn’t find this asked.

Can you share an example?

Cloudflare PTR explanation

I think some stuff would stop working if you blocked PTR lookups completely.