What I am struggling with, however, is the case when I’m linking [[something]] within a note and create the [[something]] note when clicking on it: It just creates a new note without using any templates.
First of all, make sure to enable “Trigger Templater on New File Creation” option from the Templater settings.
Then enable the option “Enable Folder Templates” option, and choose what template to apply when a new note is created in a folder of your choice.
If you want to apply the template to All notes no matter what folder they are created in, choose the root folder / and the template to apply automatically.
OK, I definitely wasn’t expecting that - I guess there’s a first time for everything Always happy to see people helping people, without caring about borders
Obsidian will reformat the depreciated propertyalias to aliases if you use the Properties UI, so you could embrace the future and change your template to aliases (even if you only have one). Let Templater do the work.