We do get them around festival season, but that's for a single month of the year, during the most dangerous time... for uh, real fires to devastate our environment. :P
For evening performances, you can always just set the ISO to 64,000 or higher, and hope for the best :D I am getting some decent results out of Lightroom's denoise / raw details at high ISOs (Nikon Z6 / Z5 camera bodies).
I think the bulk of these shots were around 32,000 ISO (with noise reduction done in lightroom). It can work, but only just. Noise in the shadows is always a problem!