Would home fans really congregate en-masse outside a ground which was empty, just because their team were playing inside behind closed doors - and won't be able to see them, or barely hear them, and definitely wouldn't give a toss anyway. Really?
If the answer is yes, I'm afraid my faith in humanity will wane somewhat.
Yeah never convinced by that, bar maybe 10-15 genuine oddballs. There would be police there. It wouldn’t be fun.