Earlier quoted context omitted.
Why’s this shameful, exactly? There’s no shame in saying you’re available to work.
IMHO selling yourself (selling anything, really) is a bit demeaning. But this is probably a class affectation on my part, not real moral intuition.
It parallels something like the idea of being say 45, never married, and looking to marry, or being recently divorced at the same age. There is a sense of having failed, or being judged by people as having failed. For men, the sense of being a pickup artist or overly aggressive.
That's why some people struggle with it. And it ought not be shameful, in either case. But it's probably more wise to point out those feelings and work through them, process them, than it is to just say "I do not recognize any valid shame here, does not compute"