> surly they can come up with an UI for the other parts
Those "other parts" is the huge hurdle that I'm referring to, and can't be hand-waved away. There are already tools that can take Wikidata and transform it into human-readable articles [1]
But it's not at all obvious how to build a simple UI for writing completely abstract lambda expressions that take arbitrary data and apply linguistic nuances to produce readable text with correct grammar.