Like aguyfrom... I also have some issues with the conclusion here, If the conclusion is that the science is concrete, and soy is poison, and the people who sell it are evil.
When I read the article at the top, it said the experimenter used a SIMILAR chemical to isoflavones called "genistein" not soy, to stimulate the gender change. It said, the experimenter HOPES someday to get more catfish that are female to market, because catfish MIGHT be sensitive to isoflavones.
Also, it's not that hard to change fish or amphibian's gender, it's a natural ability they already have. Some fish just change gender if you move them into a tank with no other fish of the opposite sex for several weeks.
Now I don't do alot of research on soy, I don't much care for tofu or soy milk, and now I'm low carb, so I just don't eat it anyway. BUT, because of this thread I did do a quick search, and apparently, humans may be sensitive to isoflavones, and the overall effect might be good or bad, we don't know.
Notably people who consume alot of food with isoflavones get less cancer in general, and though they initially thought isoflavones would worsen breast cancer in women, because estrogen makes breast cancer worse, when they did the study, they found the opposite effect. So in theory isoflavones mimic estrogen, in vivo, isoflavones might be antiestrogenic.
Learn about the benefits and risks of taking isoflavones for menopausal symptoms, lowering the risk of cancer and osteoporosis, and cardiovascular health.
www.verywellhealth.com
In general I don't think it's a good idea to read science literature when you have an axe to grind.
Isoflavones might be negative or positive for human health, the data is weak and unclear according to Harvard.
https://www.hsph.harvard.edu/nutritionsource/soy/
And that makes sense to me, because billions of Asians have been eating the stuff for thousands of years. If it was clearly a problem we would have known by now. If it is bad for us it must be weakly bad, because there's more Japanese centenarians per capita than anywhere else and they eat soybeans like it's the law.
It doesn't affect me though, because I only eat soy a few times a year. Miso soup can be fantastic though and if you ever go to a sushi restaurant I recommend trying it.