According to this declaration, has the denial of women's rights been intentional or unintentional?

It's most likely been intentional, at first they made it so only men could vote, and that men would be paid more than women even if they're doing the same job, which is still happening today. They made it so men had more rights and more freedom than women. They may have not said that the women have less rights in the declaration, but they made it so the men had more rights.