Should ICC and BCCI declare this tournament null and void?
Firstly, it isn't fair that IPL had to be rushed to finish in order to fit the world cup in. Surely it was priority to do IPL properly. That should have been done and the world cup can happen post covid in another window.
Secondly, because of covid world cup got shifted to UAE which meant India lost home crowd advantage. You can see there were some Pakistanis in the crowd v India, also Pakistan had big support in their other games which wouldn't have happened if the world cup was in India. You can say the same for other teams e.g. England had a lot of support v Australia. This means other teams are getting an unfair advantage.
Thirdly, it seems toss is very important in UAE conditions and is deciding the match. India has some of the best pitches for cricket in the universe. Should tournament have been in India it would not have bene like this.
So surely only solution is to declare tournament null and void.