This is a particularly outrageous example of a much wider malaise in British current affairs TV, with interviewers thinking they have to always play devil's advocate, to find an angle from which to attack their interviewee, even if that makes them the casual contrarian for hire. https://twitter.com/ne_al_/status/1350218367710470144

Yes, there will be people who'll complain when they hear that homeless people are being vaccinated. They are asocial arseholes and neither need to nor deserve being given a voice by a BBC interviewer.

They could instead have used this instance to informatively discuss the specific vulnerability of homeless people during a pandemic. Given the number of homeless in the UK, it is an issue deserving of coverage.

But in general, not every interviewer on British TV has to get in touch with his inner Andrew Neil and be the "hard questioner" irrespective of whether the interviewee is something trying to avoid questioning or not.

Some interviews can and should be about the viewer benefiting from the expertise and experiences of the interviewee. Which requires an entirely different type of interviewing than apparently most are trained to perform, or capable enough to understand their role.