> We are users.

In a dual role, I would say that the most impactful aspect (being a developer) matters more.

> Nobody writes a WYSIWYG word processor in a TUI.

But at the same time people write all sorts of other apps that could hugely benefit from a GUI. I seems like if the output itself is not graphical, TUI-enthusiasts won't acknowledge the advantages of a GUI layer, while only bringing in arguments why they can implemented poorly.

GUIs have a much higher surface to be done wrong, so standards are higher. But there's still a decision that needs to be weighed carefully, and many developers seems to simply jump on the TUI bandwagon just because it's easier.