There are parts of the world where politics and television are intertwined. Americans’ idea of pre-election head-to-heads were formed by those Kennedy and Nixon match-ups in grainy 1960s black-and-white. German leaders can scan debates recorded on VHS tapes back in the 1980s for style tips.
The UK is different. The British will probably get used to televised pre-election debates and other events eventually, but for now they’re still a novelty, and not just for the watching public: The leaders who have to take part aren’t used to them, either.