They are similar to estrogen,but not as biologically active. If they bind to hormone receptors, they are just as likely to block biologically more active estrogens. Whether they make your estrogen levels higher or lower depends on how high activity you had in the first place.
It's less common knowledge that this is a myth.
Soybeans contain phytoestrogens. The myths, truths, and unknowns revolve around how phytoestrogens affect humans.
I know that. I read the article. What's the point of your comment other than restating the article premise? You answered none of my questions.