It survives a few timid taps with a hammer, which isn't impressive (regular glass beads can do this).
It then also survives having the remains of the tail cut off with snips, which is a thing that Prince Rupert drops do not survive -- as a rule.
If I had to guess, then I'd guess that heating it and cooling it relatively slowly (as shown in the video) has somewhat annealed it, and thus converted a Prince Rupert drop into a regular slug of glass.
The "nose" was only not heated if glass is a perfect insulator. But glass is not a perfect insulator.
And as-shown, a lot of that "nose" was glowing-hot after being hit with the torch, and none of it was subsequently quenched in water (as Prince Rupert drops are by definition).
I was under the impression that the plates on those presses were usually hardened, hardened steel would never deform like that it would fracture so they might have made some choices there for show that wouldn’t have normally happened.
Those press tools appear to have been made from some something other than steel. (Maybe aluminum or zinc, given the cheese-like results with only ~10 tons.)
At 3:20, the deformation of the tools is shown after they have put 29 tons onto a Prince Rupert drop: There's a good dent, but not like they were made from Mozzarella.
(Later in the video are more demonstrations, peaking at around 68 tons, that also do not turn the press tools into cheese.)
