If the identifier makes it necessary to answer the question, then the information should be posted in its entirety.
For example, we have had numerous threads about wedding etiquette in certain religious denominations. What is acceptable in some is impossible in others, so knowing the denomination is not only helpful, but necessary to answer the question.
Wedding requirements also vary by country, so sometimes knowing the country in which the wedding is taking place is necessary.
If neither of the above affects the etiquette, though, the specific denomination and/or location is unnecessary and may attract unwelcome attention from posters who become distracted from the etiquette question at hand due to the details.
I believe political party affiliations are the only things we are to never, ever mention. Politics is really an area where we have to steer clear; however, the eHell blog has a section on politics. Likewise our stance on moral or political issues. Religious affiliations should be kept to a minimum.
If a poster has obscured the details so thoroughly that you can't understand the question, then I can understand being frustrated. However, if the question is still clear and you just find the use of euphemisms bothersome, you are free to skip the thread.
Some of us have had privacy issues on the board, so we may obscure our location, our family details, our age, etc. That isn't a requirement, but if a member judges it necessary there's really no way around it.