It’s not that deep so try not to get depressed. If someone accuses of you being the “OW”, then that would be incredibly juvenile.
Yes, that poster was not right to use a sexist slur. Yes, that manager was disgusting for abusing his position of power and authority. And yes, the cheating spouse is the one who deserves opprobrium as they were the ones who broke the trust and vows etc.
But, having said that, there are times when the affair partner is equally just as bad if they are friends with the one wronged party, know them well enough, have met them and their families more than once in a social setting etc. Because the affair partner met the wronged person whilst engaging in an illicit affair and doing so is has also betrayed trust, lied and actively took part in a horrible deception. So yes, in those types of scenarios, the cheating partner/spouse as well as the affair partner are in the wrong and it’s understandable why the person, who was cheated on, would be understandably upset with both.
I’m not condoning attacking someone or being malicious, but there are times when a person could easily be upset with the cheating spouse/partner and the affair partner. For instance, OP has unwittingly been friends with the affair partner for over a decade so this person clearly knows her very well and perhaps even OP would have shared her inner thoughts so it is a betrayal of trust even there have been no vows exchanged. Surely you can understand that?
Every situation is different and I don’t see every single poster attacking the affair partner, some even feeling sorry for them etc. and confronting the cheater together. I don’t see how any of that is depressing. We all have complex emotions. We are halfway through 2023 and pretty soon the year will be over. Now, I find that more depressing, as I just feel like time is flying by, than a bunch of people posting and sharing their thoughts, experiences and feelings.