We can assume that this refers to November 2016, since Kim Kardashian's Snapchat video — and Taylor's "cancellation" — occurred in July. The lyrics also mirror the comments Taylor made last year where she revealed replayed everything in her mind and wrote embittered poetry — presumably the letters addressed to the fire here — in a bid to work out how she'd misstepped so badly.
"People had so much fun hating me, and they didn’t really need very many reasons to do it," she told Rolling Stone. "I felt like the situation was pretty hopeless. I wrote a lot of really aggressively bitter poems constantly. I wrote a lot of think pieces that I knew I’d never publish, about what it’s like to feel like you’re in a shame spiral. And I couldn’t figure out how to learn from it. Because I wasn’t sure exactly what I did that was so wrong."