Common names are a funny thing, and its a bit like the English language in general with names and words constantly evolving.The terms custard apple for atemoya,paw paw for papaya,bullocks heart for A.reticulata or granadilla for giants passionfruit are mostly around 100 years old and wont change any time soon. Its not easy to challenge established common names and have something universal when they are ingrained. Latin names are different and need to be corrected, changed and used according to rules.
The origin and age of some of these common names would be interesting to research.