Question wasn't if people forget names in software, it's whether forgetting names is a problem. Like I forget names of things in the codebase MULTIPLE times per day, but I don't, and am not aware of anyone naming variables, functions etc in order for them to be memorable (as opposed to descriptive). I neither need nor want to memorize those names, I have other things more interesting to fill up my memory with.
Yes. When the names are descriptive or bland, it's almost impossible to remember what it is.