I can see this having no adverse effects within, say the incel culture, no adverse affects at all.

Describing friends as a supply and demand market business transaction is well … unusual.

It's possible, despite what many of these comments say, to build friendships as an adult. It just takes investment. What has helped me the most is:

- Bringing connections from one context into another. For example if you have a colleague you like, your relationship can't grow closer unless you start hanging out in a non-work context. Get involved with athletic activities with them. Or if you have similar aged kids, invite them over for a play date while the adults hang out.

- Combining friend hangouts. If you want 15 friends but only have time to hang with people every couple days, you don't have time to meet with people one-on-one. Organize group events like dinner parties or pot lucks. Also don't restrict these events to be just "work friends" or "pickle ball friends". Cross-pollinate groups.

- Create local friends. Nothing is more convenient than friends you live next door to. We do porch wine with our neighbors on Monday nights. It takes very little effort to set up a group text and get momentum around something like this.