Is it True that Yoga Class is meant for People who are Flexible?

Do you have the feeling of joining a yoga class but don't dare to join because you think you are not flexible enough?  I realise alot of people have this mentality. Thinking that yoga class is meant for people who are flexible to join. It is not truth! In fact the more inflexible your body is the more reason you should join. Because through yoga postures it help to improve your body flexibility and strengthen your muscles. 

Yoga is for everybody. There is nothing to be shy or feel uncomfortable because of your inflexible body. Yoga is a practice for yourself. You should pay attention and work inside you not outside you. So why put your attention of people outside you and bother about what they will think of you? It is your practice. Not their practice. 

Namaste.