The world tour angle points to it definitely being Taylor inspired regardless. The only question is if Feige has started tipping off Comics Editorial. Earlier they used to be clueless as fuck when it came to his movie plans thanks to the fued with Perlmutter but ever since he's in charge, he apparently requested to make Kamala Khan a mutant (which comics went about executing in the dumbest way possible, making me think he will slow down on the corporate synergy requests)
Honestly though, they should have announced this as soon as the rumors around Deadpool 3 started. There are already so many Swifties asking which Dazzler comics to read. Months of $$$ were lost, especially on the off-chance that she's not playing Ali in the film.