Hi, PB dev here. Privacy Badger does not replace uBlock Origin, and uBlock Origin does not replace Privacy Badger. While one of them may well be enough for you, the two work well together. Our FAQ goes into what makes Privacy Badger different here[1] and here[2].
Ah! We had to bump minimum Chrome version to 121 because of some stuff related to the Manifest V3 migration. Hopefully Iridium will update their browser soon; doesn't seem secure to run on old Chromium.
[1] https://privacybadger.org/#How-is-Privacy-Badger-different-f...
[2] https://privacybadger.org/#Is-Privacy-Badger-compatible-with...