Mastermind has an issue that I find common to a lot of contemporary storytelling (and a significant portion of Midnights), and that is the fact that it really heavily leans into overexplaining and unnecessary wordiness, as if the audience wouldn't understand if there was actually some nuance to it. And let's ignore the fact that no one in their right mind would ever call Taylor "cryptic" (even the song kinda makes the point against this lmao), but that bridge is literally a verbal diarrhoea. I can imagine her red™ in the studio trying to spit all those words out, and while the bridge does give the sleepy song a bit of punch, I don't think it's enough to save it. When I compare it to how subtly and elegantly the ideas of destiny and butterfly effect are explored in invisible string or It's Nice to Have a Friend, where you have whole relationships and characters condensed in colors of the park, small actions and seemingly meaningless visual signifiers, that's masterclass in songwriting. Mastermind avoids this art of condensation in favor of laying absolutely everything on the table, and it ends up sounding crude and painfully obvious.