If they can't explain what the product is, it is because they are effectively selling custom high margin consulting services anchored on a data pipeline product. This is not too dissimilar from Oracle, et al, that sell "solutions," "support," and "services" anchored on a not-so-special database product.

But that's not sexy for recruitment and the VC investment math does not/did not like to hear the word consulting, so they lipstick the pig and sell depth-first search as some secret voodoo magic.