It's more than plausible that tons of people in Taylor's orbit tried to involve her in various crypto schemes, and either her dad someone on her team introduced her to the concept of unregulated securities (if she wasn't already aware - in interviews at the start of her career - when she was a teenager - she would say if music doesn't work out, she was going to go into finance).
A lot of entertainment industry celebrities are dumb as a bag of rocks. Others are terrifyingly smart. Ms. Swift strikes me as the latter