I’m someone who picks up new languages easy - regardless of their paradigm - and this is honestly the first time I’ve spent 10 minutes going through a languages documentation and still not been any wiser where to start. That is an extremely odd programming languages; fascinating too.
The docs are actually amazingly comprehensive, but it does have a pretty steep learning curve, especially as it is presented towards non-programmers, so you can't nec look up how to do a conditional very easily.
However, what really shines are the tremendously well documented full games. You can literally load them in Inform and play the game in one pane and walk through the code in the other.
I'm still not sure what to think of it as a language, I think now as a full-fledged programmer, I would pick an interactive fiction framework that looks a lot more like a programming language and less like fiction. However as a beautiful experiment in being able to use the English language to write a story and make it playable at the same time, it is still pretty amazing to me.
It /is/ a full-fledged language. You can implement weather or tides or magical systems or inventory systems or health points or anything else you can thing of, but it all reads pretty English-y...until it doesn't!
Kudos for actually being able to use it.