I have not seen many discussions about them on Bitcointalk, which surprised me considering the popularity of Casascius, Lealana, Polymerbit and other physical crypto collectibles.
These makers mainly focused on Bitcoin collectibles (and to a lesser degree Litecoin and Monero).
Most other physical collectibles that are alt-coin / token associated become bargain bin leftovers for pennies on the dollar or are given away in raffles
Polymerbit notes already incorporate similar security features, so this is nothing new to our community.
Considering the crypto FTN is a Binance Chain token and that the associated exchange seems dead, I would think there is zero demand as the notes are useless
Every link or website associated to this project no longer works.... guess the bear market put an end to this scam.