It is certainly true that in the Classical era hoplon was a fairly broad descriptor of the equipment of a heavy infantry soldier, and not a particular reference to the shield (as was aspis). But it should be noted that shields were not excluded from the term hoplon.

More importantly, however, is Diodorus. He is able to make the statement at 15.44.3, (a very poor paraphrase follows, but feel free to reference the original) that: Peltasts take their name from their pelta just as hoplites were named for their shields. The text only makes sense if by his day hoplon had also assumed the role of synonym for aspis. I would argue that Diodorus at least would agree with Revelation. That is not to say Diodorus is correct, hoplites were clearly not named for after their shields (since would be calling them aspilites, or something similar in that case), but rather just that ancient Greek usage was not monolithic. The connection of hoplon and the hoplite’s shield is not just the invention of poor scholarship or the internet.