Grievance thinking IS narcissistic in nature. That doesn't make you a clinically diagnosed Narcissist as a personality disorder.
It means you have a common, every day human problem that we all experience at some point in our lives. But. You've got a chip on your shoulder about it. You think your common every day, very human problem that we all have at some point in our lives, is you being treated unfairly. And you get your head twisted around it's ow axle about it.
It's not the internet that has treated you harshly, you've done that to yourself with that grievance thinking, which is selfish and self absorbed in nature.
You're lonely, not because you never put yourself out there, but because women are hypergamous and therefore to blame.
You're unsuccessful in love, not because you keep investing in dating strategies that are doomed to fail and also just disgusting, but because women won't give you a fair chance to disgust them and yet still spread their legs for you.
Your bedroom has gone stale, not because you've ignoree your partner and behaved in ways that have made your partner lose interest in you ad nauseum infinitum, but because women don't care about men.
You're alone, not because you've isolated yourself and not invested in social skills and relationships ships, but because women don't know and can't understand what it's like to be rejected and therefore have no empathy for you.
It takes a significant degree of narcissism to experience and struggle with every day common emotions and yet come to these conclusions. You've made it all about you and how you were cheated and done wrong. You've created a grievance that doesn't exist that you now want to hurt others over.
I'll tell you something else too. Grievance thinking is a typical childhood stage. Most of us grow out of it on our own. Others have to be reprimanded by the adults in our lives to "get that chip off our shoulders".
Far too many men are choosing to stay there in that pattern. But even that, that tendency toward narcissistic grievance thinking, is not unique to men. Almost every one of us go through that. It's a very common part of normal and natural childhood development.
These men, like you "SirLove", need to be told to grow up, not pandered to. You're not special. Not everything needs to be about you. And you had a hand in all your problems. You made choices that got you where you are. That's not the same as blame.
The point is, if choices got you there, then different ones can get you moving in a different, more desireable, direction, yes?