We are nearly 18 months into this pandemic and lot has been learned and our behaviour modified to make things safer for us, e.g. the wearing of face masks and social distancing.
Many countries such as Australia, New Zealand, the UK and USA either have things under control or have vaccinated a large portion of the population. Therefore, given the very passive nature of the 'cart witnessing', I can't see why this hasn't be re-started. After all, the witnesses could just stand to one side with face masks on and keep 2 metres from any punters.
There does seem to be a huge reluctance do anything but scribble a few letters.