I suppose that this bug report is just highlighting the inconsistency. It’s true, it is different. Even though yes, simply hitting delete would have the desired effect.
Actually the opposite movement, Cmd-fn-Delete deletes the entire row forward, to the end of the line. This is really useful, and doesn’t seem to work in other apps. In other apps, Ctrl-k deletes to the end of the line. Which also works in Obsidian.