The bridge was revised to imply the characters are kids (“We’ll have lots of fun with Mr. Snowman/Until the other kiddies knock him down”), and some covers use both bridges, placing the snowman-builders in a quantum state of being a young adult couple and innocent tykes at the same time.
Also, we all agree the revised bridge is shittier, right? It’s cloyingly juvenile and rhymes “snowman” WITH ITSELF.