This is a rumor, not fact people!
1) The person in the video does not show their face or talk you through what they are doing.
2) I'm not sure, since I only know english, but, looks like some special program about :35 in. (in blue text).
3) This video shows you nothing about the process to make the fake fingerprint! It's a trick to get you watching the person setting up the fingerprint sensor, then he just takes the supposed fake fingerprint and uses it to supposedly open the phone. ...The link to how-to shows the steps it takes to make the supposed fake fingerprint, which are not easy, not quick, not at all, to say it is easy is B.S.
4) This is not confirmed.
If this is true/real at all, you would have to have something highly valuable on your iPhone for someone to do this much work.
By the way, not shown in this video, your fingerprint has to be lifted from glass. This excludes your iPhone since the screen protector is not glass, and if you don't have one, the coating on the glass smudges fingerprints, so they would have to get it from something else. (Even if I am wrong and they could lift a fingerprint from the iPhone, it would ruin the touch surface by this process.) So the person would have to steal one of your drinking glasses or a glass container you drank from, and have a complete, non-smudged fingerprint. In the how-to linked in the text of this thread, steps 4, 5, 6 look rather involved.
This is a scare tactic, nothing more.
I call B.S.