I think the tutorial (which is a draft) is lacking this information. It explains how to create new automations, but not where to do it. The answers mention plugin examples though, like the one linked by @NateDhaliwal.
Simon also suggests having a look at the data explorer plugin: Create custom Automations - #6 by simon.
Depends what you mean by “user”? 
As a developer, you can surely create a new plugin that adds automations. This is the way to do it properly.
Since you mention not understanding code, but being able to use AI for this, perhaps you’ll find this discussion interesting. Claude & Discourse-related development. How good is it?.
I’m currently experimenting with this (but I do have vague notions of code – not enough to create even a simple plugin by myself!), and will share my recent experience with it soon.
Since Claude directed you to edit the automation plugin, you may want to refine your prompts and have the AI follow actual good practices.