I think Birthday will be one of those songs (and videos) that would be re-evaluated in the future (say, 20 years from now) and praised by the 2030s criitics
Stop being pressed because Katy is resting a bit in Santa Barbara, enjoying some good s** with John. Her new world domination is in the back of her head and by September will be her #1 main goal...after seeing Bad Blood spending 10 consecutive weeks on #1 of Hot100