has the interviewer not looked at my CV with its link to GitHub and various live projects I've done?
No one ever looks at anyone’s Github, that’s the dirty little secret of hiring. A decade ago having a Github account was a weak-to-medium strength signal. Nowadays pretty much everyone has one and most are filled with junk (I’m sure yours isn’t but no one has the time to pore over it). You would be much better off saying “I contributed features X and Y to well-known Open Source product Z” where Z is something from the job spec.
Out of the 20 interviews I had only one person mentioned seeing my GitHub profile, but I’ve got a feeling they did so because they were naive enough to still care about the humane side of the process. It was a very pleasant interview by the way.
No one ever looks at anyone’s Github, that’s the dirty little secret of hiring. A decade ago having a Github account was a weak-to-medium strength signal. Nowadays pretty much everyone has one and most are filled with junk (I’m sure yours isn’t but no one has the time to pore over it). You would be much better off saying “I contributed features X and Y to well-known Open Source product Z” where Z is something from the job spec.