Is there an easier way to add words to your macOs or iOS dictionary?

This must be something new, as I think you used to be able to simply click a spellcheck-underlined word and select "Learn word" from the context menu. Now you have to do this:

Go to Settings / Keyboard / Text Replacement. Add the word but do not specify a replacement.

That's how you do it on iOS or iPadOS. If you do that on macOS you get an error message! For macOS you replace the word with the same word, which is idiotic and seems like a Windows98 workaround.

THIS IS APPALLING. Why so complicated? SO UN-INTUITIVE! Why so many steps -- including leaving the app you're working in -- to do something so simple? This is the kind of thing we'd expect to see from Microsoft circa 1995, where there was little sense of designing for user-friendliness or usability.

Apple used to be known for user-friendliness and usability, but I am continually finding things like this where it is stupidly difficult to do ordinary things on a Mac or iPhone/iPad.

It's not like adding words or unusual spellings is such an unusual thing. Some of us have oddly- or non-traditionally spelled names. Some of us work with products that have unusual names or odd feature names. Some of us live in places where the spelling of common words is a bit different.

IS THERE AN EASIER WAY? Or has Apple really lost the plot here? It's as if the people who now work at Apple HAVE NEVER WORKED AT APPLE.