There are many, many people with limited programming skills who routinely do business analysis with SQL, and a whole suite of tools from e.g. Oracle to cater to exactly that audience. So while it's not really "human readable", in a sense it has achieved its goal of letting not-so-technical people do things that used to be reserved to computer scientists.
I don't know Cucumber at all but I find it fascinating how this software seems join a long list of hopeful but discarded "human readable coding" systems - both Cobol and SQL were touted back in the day as ways non-programmers could write code and consensus seems to be that the human-readable part just made things more difficult on the balance.