I didn't watch UMK23 or listen to any of the other songs but the winner is amazing. It's super authentic, super Finnish, I love the unashamed Rammstein fanboyism and it's just well put together. It's almost terrifying when the song transitions into the more melodic part, signifying that the narrator of the lyrics is finally drunk enough to overcome his social insecurity, and almost immediately he starts describing severe effects from being unhealthily drunk.
5/5, really speaks to my soul, best Finnish Eurovision Song Contest entry ever.