No, it was not part of the routine... would be funnier if it weren't for the fact that he ended up with a fractured skull.
I was checking the news stories about this, and found:
Ironically, Heather’s scary ordeal occurred on the same day her former co-worker, Chelsea Handler, was hospitalized and had to cancel her own shows in Oregon.
Chelsea Handler cancels several shows of Vaccinated & Horny comedy tour due to health 'scare'... but assures fans she doesn't have COVID-19 from hospital bed

Chelsea Handler cancels shows of comedy tour due to health 'scare'
Chelsea Handler is explaining why she had to unexpectedly cancel several shows that she was scheduled to play in Oregon after suffering a health 'scare'.
Dripping with irony indeed. You notice the name of her shows...
