Yeah I don't know if 2021 is an unusual year - far fewer people going abroad and you notice it on the roads and in the service stations. I think superchargers, and all chargers, will suffer the same issue as the road network. 80% of the time the roads are clear, because everyone drives at the same times leading to jams and queues.
I think ultimately the solution is not just building more and more just to satisfy rare peak cases (we've all seen that constantly expanding motorways does not stop Friday evening traffic jams, not matter how many lanes they squeeze on). The solution has to be making better alternatives for those peak times - so nicer, cheaper, faster trains so that people would pick them over a long drive for example. But that would require people of vision and intelligence in charge, and that doesn't happen very often.
I think ultimately the solution is not just building more and more just to satisfy rare peak cases (we've all seen that constantly expanding motorways does not stop Friday evening traffic jams, not matter how many lanes they squeeze on). The solution has to be making better alternatives for those peak times - so nicer, cheaper, faster trains so that people would pick them over a long drive for example. But that would require people of vision and intelligence in charge, and that doesn't happen very often.