Laughing at the captions rather than the crowded beach by the way.
Guessing from the scenery that is somewhere in Kent or East Sussex. If I saw crowds like that we'd just drive on and go somewhere else. Whether we're in the middle of a viral epidemic or not. We absolutely love the beach and swimming in the sea, but we also like our own personal space. That's ridiculous and you can't blame the camera angle either.
By contrast yesterday, we were at Porthminster Beach in St Ives, an easily accessible town beach that is literally like being in the Caribbean. The beach wasn't exactly empty but we were still able to socially distance at least 10/20m from others. We had a lovely swim and saw our first jelly fish and seals of the season. We were more in danger from the local gulls who somehow managed to attack my wife's pasty whilst she was actually eating it.