Before the pandemic, the TAPS pipe show at the Raleigh Fairgrounds had up-sized to a larger venue at the Fairgrounds and it was gaining momentum. I think the volunteer organizers of these shows just find the on-again off-again aspect too time consuming. It's a large commitment of time anyway, and if the whole event is a definite maybe, it's more time than most want to spend.
Venues take time to cultivate, as do lodgings, rental tables, swag and drawings for prizes. To borrow a phrase, next year at the pipe show.