Thank you, Nick. You've pinpointed the exact issue I'm dealing with. In the real-world scenario I'm facing, I need to consider both types of filters: min-age and include /exclude . As a temporary solution, I've split the rclone delete --rmdirs --min-age 30d --include some/*/dir command into two separate commands:
# rclone delete --min-age 30d --include some/*/dir
# rclone rmdirs --include some/*/dir