> I honestly have no idea why the recruiters from these places have such a superiority complex that they need to belittle people like that.

Many, many years ago I sat next to HR in an open plan office while on a freelance gig.

They treated almost all candidates like subhumans, both when talking about the candidates within the team and when speaking on the phone to candidates.

They handled everyone from factory worker and janitorial roles, to specialists to director level. I very clearly got the impression that they only treated candidates well if those candidates could turn into people who had any power over them within the org.

I've carried that with me since and I often recognize it in HR staff I interact with now.