Can someone explain to me why people dislike dip bonus action? How is it supposed to work and why is the current implementation bad?
People dislike it because D&D tabletop rules don't have any mechanics for just dipping your weapon into anything in the environment. The closest, I think, are poisons you can coat your weapon with. And in that case, the target gets a saving throw instead of automatically receiving more damage. And the poison vial is a consumable item you have to craft or purchase. But in the current version of Baldur's Gate 3, holding your steel sword above a candle makes it a Flaming Sword of Horrible Burns.
It's interesting because the saving throw against poison is actually there for familiar bites.