Ive worked in sales for over 10 years. Incel is a weird insult for salespeople, as I've never met a group of people that sleeps around more than salespeople. I spent years selling cars even, and if you bring a gf or wife you're having trouble with to go car shopping... Odds of her later sleeping with the car salesman are not zero to put it mildly.
Nowadays, incel is synonymous with the Andrew Tate “top g”/alpha sex obsession. Backwards? Definitely, but more symbolic of the arrested development/lack of maturity than the lack of sex.
Sleeping with others’ significant others, or actively trying to/bragging about it is a perfect example. Low-class behavior that will get you props from low-class folks.
But go ahead and label everything you misconstrued as low class.
If you feel it applies to you/your experience, whatever, but it’s not a personal jab.