Simple answer: Yes.
Having only some of the available options in the GUI, and requiring users to go edit a configuration file for others is a non-starter with all but us geeks.
Having the GUI present a blank form field into which the user needs to write (or paste) code is a non-starter.
Automations are the heart and soul of a home automation system. It’s absurd to think the masses are going to write code to do this. They want (for example) what duesseldorferjung describes; a GUI way to select days, day-of-week, etc. Things everyone would naturally want to do.
Of course, some things can’t be “dumbed down” enough for raw beginners. Hiding details in “advanced mode” is a great way to balance that. But advanced mode still needs to be a GUI.
An advanced user is NOT a developer. Two totally different skill sets. Think of the accountant who is an advanced Excel user, but doesn’t have a clue about how to code a spreadsheet application in whatever language Excel is written in.