I want to make this as short and easy to read as possible, so here are 2 scenarios involving dropping a weapon (including legendary weapons):
A. With weapon paint on (Whether the weapon is favorited or not):
- From pip-boy menu, drop weapon
- Game asks you to destroy, and "yes" is the default highlighted option (very easy to mess up)
B. Without weapon paint and the weapon is favorited:
- From pip-boy menu, drop weapon
- Game asks you if you want to drop, and "no" is the default highlighted option (not as easy to mess up, and doing so you can still get your item back)