He may not care for such a call, but if there is an actual vacancy involved, there are millions of unemployed/underemployed people in the UK who would kill to get unsolicited calls from recruiters offering them £35-40k roles.
The terrible state of IT recruitment is a legitimate issue and trying to derail discussion of it in this way is obnoxious.
Also, there's not millions of viable candidates for software development roles who are unemployed. If there were, salaries would be dropping and there'd be no cold calls from recruiters. The people you're talking about - while potentially highly skilled in other areas - would hate to get that call just as much as the author, as it would be a job they couldn't do and a waste of their time. (Not to mention demoralising.)