Same small personal nitpick I have with games like these, like cult of the lamb and timberborn: I could not care less for decorations and the mechanic of needing decor is sterile and put there only as an additional layer of expense and complication.
The decor system is something you can safely ignore for all the game. The worst you can get is a -1 Morale malus, which is laughably low and doesn't have any consequence (as long as you keep Dupes Morale high enough, which is easy: don't overskill them).