Culturally Taylor has had zero impact anywhere TBQH. The songs are always about her being angry with someone or someone being angry with her. Taylor has nothing that stands out about her other than her sales....and the beefs she creates between other stars.
Madonna had the creative angle. Janet is the best dancer. Mariah is a great vocalist. Katy Perry has her writing skills. Taylor literally has nothing that she's particularly good at other than selling records.
I don't really hear any of Taylors back catalogue out in the wild. That says to me the songs weren't impactful like the songs from Mariah Madonna and others...
Impact is a thing that cant be measured and people just pull out of their asses to discredit actual measurable receipts. Hence why Celine has "no impact" yet she keeps outselling / outgrossing / outlasting her impactful contemporaries while having classics just as big as they do
so Justin Bieber and Miley Cyrus have more impact than Aretha Franklin