"P-trap" is a confusing word that plumbers use, we should instead have them say "gas barrier". And the word "fuse" makes very little sense in an electrical context—try explaining to someone who's never seen a stick of dynamite why the "overcurrent stopper" is named after a long gunpowder-infused cord! Traffic engineers shouldn't refer to "groups of cars" as "platoons" (they're not in the military!), and software developers should stop talking about "DDOS" and just say "lots of computers hitting my server at once"!

In all seriousness: jargon exists because it's useful to be able to refer to something that you use a lot conscisely and precisely. Your proposed replacements are not concise or precise, and they only solve the non-problem of people not understanding the etymology of the jargon. Part of learning a trade is learning the jargon associated with it, and that's true for every trade.