Terrible idea. Don't do it.
On the subject of terrible ideas, the advice about not being empathetic towards women in general is pretty crappy as well. If you want have a meaningful relationship with a woman in the future, you shouldn't buy into the misogyny bullsh!t. The majority of the guys preaching that on the site don't get/understand women and are always waiting on women to screw them over in relationships. There is a difference between supplicating, and understanding why women do the things they do. I am not saying to justify if a woman does something fvcked up, but in order to understand how to react and respond to a situation, you have to understand what a woman is thinking. It is hard to do that if you are too busy focusing on not being beta or whatever other garbage that people push off on this website.
You need to GFTOW so that you can get over your ex. The problem is not that your ex is amazing, the problem is that the other women you have in your life aren't a high enough quality to completely take your mind off of your ex completely. Keep dating and meeting new women and eventually you will realize that your ex is not a huge deal.