Have you tried reading the docs? A full list of approved verbs is available, and describes in detail when you should use them and what synonyms they should replace. It makes sense for anyone willing to spend a moment investigating why it's designed that way.
Tell that to the people writing PS modules. :) Put, Update, Update, Put? PS is a good example of overdesign imho. Also, one can compare for instance Az CLI with Az PS. Takes at least 5 times longer to do anything in Az PS.