[meragrin_]

> Please imagine a schoolteacher going into a classroom on the first day of school and saying with a straight face to students "I am going to show you a video on how to cut off your leg" or something like that and then not explaining that it's a joke.

You seem to be confused. Where does "a video on how to cut off your leg" come into this? The tweet was about willingness to give up a leg to be able to access the tutorials. A more appropriate equivalent would be imagining a schoolteacher going into a classroom on the first day of school and saying with a straight face to students "I am going to show you a video you would gladly give up your right leg to see."