I say its more likely the researcher found article from 2019 https://pulsesecurity.co.nz/articles/TPM-sniffing https://pulsesecurity.co.nz/articles/TPM-sniffing

I say its more likely the researcher found article from 2019 https://pulsesecurity.co.nz/articles/TPM-sniffing https://pulsesecurity.co.nz/articles/TPM-sniffing describing this very attack vector using FPGA dev board. The only novel thing here is price point going down by a factor of x10 to $5-10.