If you run builders delight latest version 1.20.1 Forge with better compat the game crashes. If you need a better way to figure out the issue or my logs lemme know

Do you mean every compat?
But yes, could you pleave provide the crash log?

Edit: It's because the furniture kit is now using the vanilla item class, instead of having it's own class.
Wait for a every compat update or use the previous version of Builder's Delight until every compat is updated.

Thank you for reporting.