I've been over there off and on for grins. There are some ???'s, yes, but I don't believe nearly as many get confused over there as over here. People obviously can't read any more...either that or some are just too lazy to look before leaping...
That would imply that proton users have the reading or other problem and PBP users got it together.

Being there are links to the respective forums on the seller's web sites.

Just an observation...not an accusation.