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

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