Worst advice in the history of advices. If you have nothing to lose and hate your significant other, then yes that is good advice, he has a kid probably a house and probably joint accounts and that will be used against him if she ever finds out. Also if you get overly agressive something is wrong with you, either mentally or your estrogen is too high, test is supposed to give you a feeling of well being not turn you into a complete asshole.
Here is how it worked out for me, at one point in my relationship (been with her 4 years now) I was overworked, over educated (too much university) and over trained, btw this is recent, it destroyed my libido completely, to the point that I was just uninterested by sex, myself being an ex nympho and my gf loves sex when that well dried up we went to a doc, explained myself, he did bloodwork, test was low, he talked about testosterone replacement therapy (TRT) but we want children, so we decided to get my sperm frozen and go the underground way, cause in canada they prescribe that shitty gel that you put on your balls and have sticky balls all day and you have to do it every day which is annoying as fuck.
In the end I hope that after this cycle of 15 weeks, I will be able to get my natty levels back to where they were or almost with good post cycle therapy (pct), if not it is testosterone replacement therapy (TRT) for the rest of my life. I guess some guys call that lucky, I call this a tragedy cause there was seriously nothing wrong with me before.