I can’t speak for
@EzekielRaiden, although I think we share similar sentiments on this issue. My take is that generally a GM
shouldn’t attempt to author highly specific settings and then look for a group to play them, because that specificity causes more harmful issues than it adds positive additions to play.
If you like to solo worldbuild for fun, go for it. If your group has been together since the Pliocene like @Lanefan’s and is cool with you building out a highly specific setting, great. Otherwise, I think it’s a poor idea.
Exactly.
I see this as precisely, 1:1 identical to a player building their SUPER AWESOME AMAZING character, with 50,000 words of backstory, feats selected from literal years of poring over every "official" source (read: published by WotC...or in Dragon Mag, which is
notoriously unbalanced), extensive physical description backed up by commissioned art (no AI-generated slop will do!), extensive personality analysis, etc., etc.,
ad nauseam, and then getting upset when their buddy says they're going to run D&D, looks at that character, and says, "I'm sorry, this is unbalanced and deeply flawed, I can't accept this character."*
Every time I've seen this sort of thing, where a person crafts a ludicrously detailed, nailed-down-to-the-mile geography etc. etc., it reveals itself to be a dramatically over-precious labor of love. It's the GM's baby. We have the infamous "DMPC" concept. The same concept can apply to the campaign setting. Not sure what snappy name it could have though. "Dungeon Master's Setting Character"?
*And, to jump in front of a response I'm dead certain I'll get: no, this is
not the same as blanket bans on whole concepts. Blanket bans are a whole different beast. "This one specific character, as written, is unbalanced" is a fixable issue--the same concept might still work with fixed balance. "Deeply flawed" is of course more complicated, but could be addressed, probably with fixes to particular behaviors or attitudes that are likely to cause problems for the group. "You can't play a dragonborn because I hate dragonborn and thus forbid them" is not a fixable issue. It's a rejection of the other person's interests.
Very different thing, though I wouldn't be surprised if people take umbrage with this distinction anyway.