Straight-up: I wish you would apply this logic to your own posts. Calling my style of DMing "design by committee" wasn't exactly "having a preference without insulting people."
I did not say that you or any specific poster did design by committee. Design by committee is one end of the range of options. The DM may make decisions on the setting without input or at the other extreme design by committee and anywhere in between.
I think any and all extremes are perfectly fine as long as the group enjoys it. That's different from people describing DMs that wouldn't allow an aquatic race as adventurers because they see limitations to how long an aquatic race can survive out of water (or specifically, in a desert) as "crazy control freak".
EDIT: to be clear I'm talking about world design here - the DM sets the stage with little or no input or the group does a group session world design that other people have mentioned in other threads. Design by committee is not a bad thing.