Another good example of the issue here is any programming language that was meant to be able to be read/used by non programmers. SQL is a great example there in my opinion. The syntax and structure is clearly meant to try to mimic relatively natural language, yet in practice I think SQL is vastly more challenging and complex than most any programming language intended to be used by programmers.

Of course this goes all the way back to all the programming language that used to be used around the time of SQL's development, such as things like COBOL. They're just really tough to work with, even for those of us who learned it as one of our first languages. Anecdotally at least C structure languages now feel 'natural' to me, whereas the natural language programming languages always felt (and feel) like trying to fit a square peg in a round hole.