That article is written with an intentionally misleading and provocative title to spark division and outrage... and you guys are falling for it. The only reason they worded the title in that way is to get people talking about and clicking on their page so they can make a lot of money.
If you simply step back and understand the situation, it actually becomes very simple. It's not saying everyone bleeds... that just isn't true and would be absurd. What's it's saying is that transgender boys can experience periods. That's an easily understandable concept... and that's all it's saying. It is useful and necessary to address this fact... trans boys exist and they may experience periods. This is a very simple and straightforward thing and it's just an aspect of reality that people should be aware of, especially regarding sex ed.
In no way does it mean that schools are teaching that "boys can have periods" or everyone can experience periods, that is alarmist and unfounded... it is only specific to transgender boys. It's simply true that periods are something that trans boys can experience and they will need support regarding that... there's nothing wrong with addressing it or being aware of it. All people should feel comfortable enough to discuss and understand menstruation, especially when they are going through it themselves. They should be able to have access to the information they may need and shouldn't be overlooked in their sexual education.
Biological males simply cannot have periods... if blood is coming out of your penis, you should go to the hospital. When discussing medical topics related to physical sex, it is necessary to address the difference between a trans man and a cisgender male. The article's title deliberately leaves this out to provoke you to click and give them profits. There's no need to be outraged about something that isn't an issue. No one is teaching the idea that every person, including males, can have periods... Only people with female sex organs (a functioning uterus) can have periods, this is a basic fact that is not being refuted by anyone and cannot be refuted.