So you'd hate fighting a King Tyrantlizard, then? What about a Threehornface Horror? Armored Rooflizard?
You seem to think that these Latin names are magical and special and somehow not the same stupid fused-word naming convention we use all the time for animals. I blame Harry Potter.
I don't know how that sounds to everyone else, but I would be quite happy to see "Tyrant Lizard King" in the Monster Manual. And "Three-horned Lizard" is not bad.
As long as the designers use some common sense, English-derived names can still be pretty good. The problem with WotC lately is that the compound names have been simply bad.