That citation abstract very clearly says "could link" prostate cancer and biological processes and "may lower" prostate cancer risk, it's definitely not as clear cut as you're making it sound. The paper itself isn't even confident about the statements it's making
Literally prostate cancer research determines a 20% decrease in risk when ejaculating 21 times a month.
This isn't 2016 anymore when the research was still going on.
That citation abstract very clearly says "could link" prostate cancer and biological processes and "may lower" prostate cancer risk, it's definitely not as clear cut as you're making it sound. The paper itself isn't even confident about the statements it's making