Simply not true.
Boys have been playing field hockey in the state for 40 years. Most people playing field hockey in the world are men/boys.
This is more about an errant shot and a player who thought mouth protection was “optional.”
The reason I thought it was a trans was I watched the video on my phone. I thought that player they closed in on afterword ( the heavy one wearing the skirt ) was the one that hit the ball :-)