Both WWE and AEW had an outbreak of COVID-19 in recent weeks. They happened around the same time. Both companies dealt with the outbreak and made the appropriate changes to their booking. It seems there is more to the story than initially thought.
On Wrestling Observer Radio, Dave Meltzer discussed the recent outbreak in both companies. He noted that people in AEW believe that their talents contracted the COVID-19 virus after socializing with Superstars from NXT as quite a few of them socialize in real life. It was also said that Lance Archer did not contract the virus from an NXT Superstar. So, there are many ways to get COVID-19.
Both companies are allowed to run shows with full capacity, but it will still be a while until we see that happening.