Judging by that thread...
Yes that is too much grease.
Don't put Float fluid anywhere in any new forks, Fox stopped using that and swapped to 20wt gold in most forks in around 2014 when they swapped their dust wiper design. Some of the 2014/15 forks use float fluid in their air chambers . By 2016 all forks are now using gold.
There is no grease used on any stanchions from Fox ever. That's what the bath oil is for.
"Damper overfill" is from ingestion from regular use, it's not an issue from the factory, those guys need to service their forks more.
There should be NO air pressure in the lowers so if that guy is getting air release from the dust wiper when he jams a zip tie down there then he's got an air leak. (Don't jam shit down your dust wipers)
Don't lube your dust wipers, leave them dry as the engineers intended.
There is very little friction / stiction on the 2018 air springs when they are clean and assembled correctly. This is a fact.
Not every air piston will retract in to the stanchion when aired down.
Using aftermarket parts could completely void your warranty. Technically it does.
Most of those guys have the old 2018 air spring, there is an update for his air piston that is covered by Fox. Not all the TSBs are public which is why that guy never found the air spring TSB / update info.
If it's new it should go back to the distributor to be checked out as they are your only source for warranty service. All the local shops / independent service centers will return items with warranty issues to the distributor aside from one single exception at one single service center.
A lot of those people have no idea what they are talking about.