So a couple days ago it was discovered that the various Sold Out dates for the event are mysteriously available again, as it seems like they've increased capacity for the event.
"Sold Out" Boo Bash Dates Available Again - Disney Tourist Blog
As Tom Bricker mentions, this is a cause for concern. Since if they increase the capacity for the event beyond what they normally allow for an After Hours event (which is usually capped lower than what Covid-Capacity is), then that pretty much defeats the purpose of an After Hours event as the main selling point are the significantly smaller crowds.
I know there's been a lot said about Disney botching various operations/guest experiences lately. But it seems like the company is on a roll with that if they do this.