The biggest problem with this idea of moving on is that it is not possible to do from a mental health standpoint and not in line with human nature.
Psychologist Abraham Maslow created Maslow's Hierarchy of Needs. According to this model below, sex is a basic human need. Maslow believed that if a human cannot satisfy their needs on a certain level of the pyramid, they cannot consider other hierarchical elements. Incels are lacking sex, one of the most basic human needs. The lack of one of the most basic human needs makes achieving that need the sole focus of their lives.
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You are confusing sexual intimacy with sexual need. Baseline sexual need (which a voluntary celibate may choose not to do anything about) can be satisfied with fapping, sex-toys (fleshlight, sex-dolls, whatever), or hiring an escort. Afterall, it's just a physiological bodily release you are comparing to the other biological functions (which don't need a partner to facilitate them). Again it's arguable because you would actually die if you stopped breathing for 6 minutes, if you stopped eating for a long-time, within days to a week if you stopped drinking, sleep-deprived people can't function and eventually die as well, if you don't excrete you are also in trouble, that leaves sex and homeostatis. People choose not to have sex and guess what, nothing happens with them. In fact, if you don't fap even and stay celebate then there is no physical break-down.
Sexual intimacy belongs to love/belonging and is the third need up that pyramid. Otherwise, it doesn't fit the way you are portraying it. I'd say other issues, like notch-counts, conquests, is even higher up that pyramid and is more likely "esteem".