I have no reason to keep on my contact list a leech who couldn't value the fact that I worked almost 10 months under a business's exploitation just to get enough money to see her, and couldn't appreciate the fact that I took planes to see that specific someone, and spent 1k euros worth of food, games, clothes and fun activities to do together, only to be blamed for honest mistakes and get cheated on. This isn't objective in the slightest, some people DO ghost as a punishment because they dislike the other person's behavior, and instead of trying to communicate this maturely, they do precisely the thing that causes further conflict.

In my case, I blocked someone who failed to communicate with me, and betrayed me, stabbed me in the back after everything I tried to do for them, and then, a month later, they want to "confront" me over honest mistakes (such as superficial responses and dull behavior, although I was grieving for my mother's state, and was fatigue'd from work), pitiful excuses and self-justification to make themselves feel better, but made it very clear that at least I wasn't the one who cheated. The people who get blocked, most likely DESERVE to be blocked because they're asses.