CLEAN : Italians welcome mandatory vaccination of people over 50

The video begins with an expression of gratitude towards a person referred to as 'Sir'. It then moves on to provide some form of clarification or instruction, possibly related to a replacement or a decision not to join something.

In what situations might someone say 'Do not join.' and what could it imply?

Reflect on the emotional undertones present in the text. What feelings do you think are being expressed?