I use the CLI because it's keyboard-focused (though I use lots of mouse-enabled TUIs) and because it's programmable.
Generally though, I kind of get what you're trying to say, but 'uniformity' feels like an unfortunate choice in the context of your question, as the meaning can be very arbitrarily defined, hence the confusion. I could, for example, claim that GUIs are more uniform because all chat apps, browsers etc... are so similar to each other that once I've learned one I can use all.
Which is why It'd probably be better if you tried to reword your initial question avoiding that term, focussing more on describing the desired benefits of your definition of uniformity.
Otherwise I'd point towards voice recognition, as that's very similar to a CLI, but probably not what you had in mind, I'm guessing?
Don't worry. There's still plenty of ESP32 waiting to be flashed with ESPHome and placed into their own little enclosure out there.
Source: Me, who's got a Bluetooth Proxy for my adjustable desk and some small LED strips running, with a soil moisture sensor planned as my next quick project.