When people read they don't just look at the clinical definition of a word, they can't help also factoring in the word's common use. So, how is "press" used overall? The first line in my synonym finder under "press" used as a verb reads: force, push, drive, ram, shove, elbow... nothing there like what we do to a trigger. We owe it to readers to be as precise and concise as we can when using the language to express ideas and provide information. Why use an ambiguous term that can be twisted to mean what you want to say when there is already a precise word in general use that cannot be misunderstood? Why risk confusion? You can't push and pull something at the same time with the same finger. Press and push are close relatives while pull and retrieve belong to the same family. Some words just don't feel right and in this instance "press" feels backwards...