Use of Blogger includes various activities.
- Moderate Blogger hosted comments.
- Post comments, as a blog reader.
- Edit, preview, and publish posts.
- View Stats.
- Use the Template Designer.
As Blogger implies, both cookies and scripts are vulnerable to being disabled (turned off) - although the term "turned on" suggests that there is one single setting, possibly affecting each individual cookie or script. Considering the effects of layered security, we know this won't always be true.