IMHO it is better, to confirm the click onto the link "rollback" of page revisions in wikipedias of any language, to prevent a rollback onto the link as mistake. Rollbacks by mistake are very awful and I suppose this can be prevented simply.
Click onto the link "rollback" and then it should pop up a window to confirm the rollback (yes/no) before the revision will be rollbacked.
Thank you, ...