They know radio won't support her, TIHWD was just the beginning. They could smell 30 getting closer, Birthday reminded them of it.
Actual conversation:
Radio DJ: Wow this new Katy Perry track is great, thanks for the cake Katy, sounds just like a smash from Teenage Dream *plays 9021301 times*
Radio DJ: Why isn't this flying up the charts? Hmm. When is Katy's Birthday anyway? HOLY ****, she's 29? That explains why it's such a flop.
Katy: This Is How We Do is my new single, please play it!
Radio DJ: You're basically 30, wyd?
Katy: *cries 30 year old tears*
It might be a full song but who cares really? It probably won't be sent on the radio stations and Katy won't promote It
True, it won't go #1 now that Adele has released, which makes its existence literally pointless. Nobody wants a Christmas song unless it's her 2015 #1.
TIHWD FLOPPED because the song is tragic and she didn't promote It "The radio refused to play It" Of course radio stations want to protect their listeners from hearing this TRASH song that RUINS your whole day. The GPee wasn't here for Birthday too but at least the song serves pop perfection
congrats to the jester of pop and her yes-man team
'
The second one tho omg the definition of tragic 
