And if the number is worldwide, why do they expect STIM (Swedish Performing Rights society) to pay for it? Of course they won't, STIM only collects royalties for performances in Sweden! Every country in the world has its own performing rights collection society. For music played in the United Kingdom, she gets paid by PRS, in France it's SACEM etc.
Artists usually don't have the "performing rights" for a music. The person who gets the performing rights royalty payments after a music is the composer. Lady GaGa received that paycheck not as an artist/performer but as the composer of that track (along with Nadir Khayat). She is not the only composer of the track so she only gets her share of the payments. The article has huge factual mistakes.