1) blocking known fingerprinting scripts.
2) blocking underlying techniques.
The second is the one people here are talking about, and it can be enabled by going to your settings and turning on resistFingerprinting. Keep in mind it will do things like normalize your time zone and decrease timer precision.
I understand what the original posted link is talking about, but the specific thread you're currently on is very clearly talking about more than whether or not Panoptoclick's tracking script is blocked. They're talking about how well different browsers can resist the techniques it uses[0]. Why else would anyone be comparing their results to Tor?
I had assumed it did, cause why else would we be discussing it here, and neither the OP post nor the FF setting are very clear about what it does. So I would have been thinking it was protecting me.