So, first off: TRP has no idea about casual sex.

As TRPers don't like having female friends (or just generally being socially active) they don't get a full view of the picture. For them social circle game is nothing that can be talked about, as they can only ever imagine hooking up with complete strangers.

In reality most hookups happen between friends or acquaintances where pumping and dumping simply doesn't fly - and why would they even dump them if they can just continue being friends with benefits?

Sexual Hookup Culture: A Review

Among college students, hookups have been reported in a variety of college settings. One study of students’ perceptions of hookups reported that 67% occur at parties, 57% at dormitories or fraternity houses, 10% at bars and clubs, 4% in cars, and 35% at any unspecified available place

Only 4.4% of men and 8.2% of women (6.45% of participants) expected a traditional romantic relationship as an outcome, while 29% of men and 42.9% of women (36.57% of participants) ideally wanted such an outcome

In one study, 60% of 125 undergraduates reported having a FWB relationship at some point in their lives

At the time of the survey, 35.8% stayed friends but stopped having sex with their most recent FWB partner, 28.3% were maintaining an FWB relationship, 25.9% ended their relationship or friendship, and 9.8% initiated a romantic relationship

Predictors of Hooking Up Sexual Behaviors and Emotional Reactions Among U.S. College Students

Previous research examining casual sex among college students found that 37% of most recent casual sexual partners were someone with whom students were less familiar (i.e., stranger, someone they had seen around before, or acquaintance), while 63% of students reported that their most recent casual sex partner was a friend.

In a recent study, Fielder and Carey (2010b) found that, among female college students, hookups were more likely to occur with friends (47%) or acquaintances (23%) than with strangers (14%) or ex-boyfriends (12%)

No strings attached: the nature of casual sex in college students

Casual sex occurred more often between "friends" rather than with strangers.

The Role of Peers in the Emergence of HeterosexualRomantic Relationships in Adolescence

In turn, the number of other-sex peers was associated with having a romantic relationship both concurrently and in subsequent years. The structural modeling revealed a significant direct path between the size of the other-sex peer network in grade 10 and romantic companionship in grade 11. Having a large number of other-sex peers may facilitate the emergence of romantic relationships in several different ways. First, adolescents may date other-sex peers in their network and go on to develop a romantic relationship with one of them.

Adolescents seem to meet potential partners they do not already know through their interactions with other-sex peers they do know.

In reality most casual sex happens at parties (where TRPers aren't invited), between friends or friends of friends (which TRPers don't have) and without the expectation of a relationship (which TRPers can't even imagine as the sidebar claims that women naturally always crave a relationship). Also, despite TRPers claiming that successful men don't have female friends, in reality it's men with mixed group of friends that have the most sex and romantic relationships.

TRPers fantasize about women getting pumped and dumped, simply because they have no idea how most casual sex actually plays out. In reality it's much more likely that two friends have sex for a while and afterwards still stay friends, or that people have casual sex fully knowing that it will be casual.

TRPers only get to see the minority of women that get's pumped and dumped, as those women that know what they want are invisible to TRPers - as those know that they don't want a wannabe-dark-triad faux-alpha.