Or maybe they just didn't know the jargon for these things. This industry is filled with individuals having no formal training and it is filled with plenty of non-standard jargon. It isn't unreasonable to ask that said jargon not appear in the one-liner when the intent is to sell, so to say, the framework.
In my org, "event sourcing" is the metastasizing obfuscation layer over the mainframe era batch data processing complexity catastrophe.