Do the dedicated, die-hard and fanatic medaglie also depens on the number of people who see what te post?

Yes and no.
In your case, no one sees it and so then no one voti on it.
In order to get a medal in a club te have to have alot of people like your pictures.
o te have to have a lot of people answer your quiz questions.
o both.
So yeah if there are only 2 people I don't think te can get the medal.