You can tell by the comments that some people are very passionate about the mini
I can understand however why Apple would cancel it, people vote with their money. If a product isn't selling - it's not an attractive enough product. The iPhone 12 fits perfectly in normal pockets, I feel like most people with a mini would be fine with the normal 12 as well - which is probably what Apple is banking on if they cancel the mini.
or move to a small Android phone...if such thing exists.