"You are trying to justify the celebration of some very, very banal and pedestrian stuff here."

Don't make assumptions. I do not feel the song was "banal" or "pedestrian".

Aside from your assumptions, you do make a good point about songs not being particularly memorable. You would have to go back a few decades to when musicals had a greater role to find really good songs.   From the performances I heard last night, this was the best of the bunch.