Eh,
Yes. So your character is not allowed to drink [fictional drink]. That is so cruel.
The question that should be asked instead is not whether this is 100% set in stone by CCP's PF but whether it is a plausible and beneficial addition to the whole flavor of RP.
The immediate follow-up should be: Is it really that big of an influence on people's characters or am I just putting myself into a counterposition in a possible debate because I simply can?
Also: But think of the children!
Seriously, this is being anal about minor things at its best.