Hi,
1. Because that applies only to the contents {descriptionfield} main pseudo variable. The advanced description field is kept as-is, because it may contain HTML and other tags, which should not be tempered with.
2. Sure, you can change that here: https://i.imgur.com/yptTMw7.png
3. That is not stored unfortunately in the local statistics. You can use the google analytics events integration, that can send the number of results.