There isn't any rule forbid a person to talk about his enlightenment.
I found that while reading suttas allows me to understand the dhamma, reading the patimokha is very interesting as well, because there are a lot of history and stories in it, and it allows me to understand how a normal person reacts to a normal life.
Before reading patimokha, I always distinguish monks with bad actions and not respect them. But after reading it, I respect normal monks better because I know the limit the Buddha allow his disciplines. Once I thought monks that lied, killing animals, using alcohol,.. should not be considered monks, but after reading patimokha, only killing humans, stealing value things, having sex and falsely claim noblemen status stop them as a monk.
Monks isn't allowed to show their supernatural powers to lay people, that is the rule.
Please stop following me