@JStrodt_WMDE There was a change in plans about when we are adding warnings and I wanted to provide a detailed explanation here as the request originally came from some user feedback.

I looked into the best practices for confirmation dialogs (this article is a good overview) and it's not 100% straightforward for every case but the general guidelines are:

• do not use for routine actions. Users then get used to them popping up and just try to quickly move through them without reading, ignoring the content
• only use for actions with serious consequences, which cannot be undone

In this case, it is a pretty routine action which can be easily undone (with Ctrl+Z or with the undo button in the toolbar). The user can also exit the editing session without saving, or if they save the information is still there from a previous revision and can be copy+pasted. Or the entire edit can be reverted.

While adding this warning might help stop some accidental edits, it would also be creating a new roadblock for editors doing this intentionally and create a habit of ignoring these warnings all together. Since there are ways back, we decided not to implement for removing templates while in the article editing mode. We are implementing them in the dialog because there the edits really will be lost, with no way to get them back.