Mr Linekar and Ms. Allen are entitled to register their views as free adults - and their relatively high profiles makes them doing so picture fodder for the tabloids, which I am sure they accept.
What it does not do is sign them up as political agitators who have to appear to protest at every single wrong in the world - I am sure they have far better things to do.
Does it? Not to me. It would be exhausting having to list every single thing of which you disapprove every single time you make a comment (verbal or written) about any issue.