Hat looks taller noticeably because it has been “coloured in”, this takes away shape defining lines, causing a loss of perspective for the viewer. The curved screen is concave and is unlikely to have an “enlargening efect”. it looks larger because dumb crayon wielding numpties
also because the kremlin background, we know, or our brain tells us that the building is larger than a person, so the graphic adds size, difference between previous tory minister shown whole body, Corbyn only head…. try showing anyone as enlarged head, it’s rarely flattering.