This image is now being circulated in social media. I think the person who created this image has an unexplainable hatred towards religion. His/Her view on Hinduism is a misguided one.
I remember one joker from Utusan once wrote an article on Manusmriti and tried to make fun of the Hindus. Looks like Utusan is not alone.
Manusmriti is a Smriti, meaning written by man. Therefore, it has no authority over modern Hindus. Vedas are Sruti, meaning non-human and divine origin. It is based on revelation received by Sages through their spiritual experience.
Manusmriti was actually written by Manu, a king who ruled during ancient times. It was actually the constitution of his kingdom. As we all know, man made law can always contain flaws. Manusmriti has alot of good things in it and also loads of crap.
It is not necessary for modern Hindus to follow Manusmriti. It was written for people of a different era. Hindus have the free will to use their own intelligence.
Women actually have a high position in the Hindu world. There are also many rituals which can only be done by them. Certain fast are only observed by women. So the joker who created this image need to do some homework.
Hinduism is perhaps the only remaining religion which sees God in the form of woman, Shakti. What else is needed to explain this?
However, women are usually prevented from conducting rituals when they are on periods. The actual reason behind this is deep rooted in prehistoric times.
Those days, there were no sanitary pads. The women on periods used cloth. So there was odor and blood stain.
Prehistoric people lived in jungles and women on periods had a higher tendency of attracting predatory animals like lions and tigers.
Religious rituals were not individual but done in groups. People lived in groups. So their rituals will always have some sort of gathering.
So segregating such woman during such ritual reduces the chances of danger for the others in the community/village. But of course, our good prehistoric ancestors would have assigned someone to guard the woman in the hut when the rest are busy with their ritual.
This could be one reason.
The other reason is women on periods usually have mood swings and many go through pain. Periods are also not hygienic. They may not feel comfortable to conduct a ritual. It is better for them to just take a break on such occasions.
Over the time, people forget the actual purpose and turn it into a tool to discriminate women.