The only Halloween. I can recall being cancelled or postponed here was for the 2011 Octobomb. That just delayed it by a week.
We had trick or treating even for Halloween 2020 despite the sub freezing temps and snow on the ground and Covid. It was different but it still happened here. We set up a table in our driveway, had a fire pit , and stayed 6 feet or more from the kids when needed. We spread out the candy on the table so they weren’t digging in a bowl.
Last year was back to normal.
Definitely fewer kids come by now than 20 years ago and that is probably due to our small town setting up activities in our “downtown”.