The bad reviews seem to be from people who never played the game before or enjoy using the joy cons as controllers

Others who wrote bad reviews are only complaining about using joy cons or needing to buy more controllers to do more than one player

Almost all of the negative reviews are complaining that you can't play it in handheld mode, but it's a party game

Second, other reviews complain about not having a handheld mode (which there is if a friend brings an extra switch console)