I've just flown from Frankfurt to London, and you realise what a complete joke these social distancing rules are. All over Frankfurt are signs posted "1.5 Meter abstand" and seats are alternately taped off to prevent you sitting next to anyone (even though the width of a seat is much less than 1.5 metres anyway, and you can still sit back-to-back with someone a few centimetres away, which makes it entirely pointless). Mask are compulsory but apparently how you wear them is up to you, so "nose sticking out" - fine, "under your chin" - fine, "top of the head" - fine, need to snack - fine. Then you get on the plane and you're crammed in like sardines, literally elbow to elbow with the neighbours.
At Heathrow there are 2-metre rule signs everywhere, yet the queue for passport control has only about a metre between the lines of the "snake" as the queue wraps round, making it impossible to stay two metres away. Then comes the quarantine form, which you can fill in with just about any old rubbish which is not checked, they don't even check your address is real.
It feels like gaslighting on an industrial scale.