No, it's better to type {{Delete}} in your turnsheet table cells instead of leaving them empty when working with automation. More specifically:
Don't leave the "Else" field empty, instead select the "Delete" option from the dropdown since it has the same effect but is clearer.
If your column is going to be the "If" column of another automated column, type
{{Delete}}in cells instead of leaving them empty. This has the same effect, but is clear to other users and will be easier to work with for automation.