I've read some of Dr Fry's work, but not any of this more recent stuff. Not having read the new work, my opinion is that this is just a result of the new technologies we now have. I know what you're thinking.........Duh, John that's what we're talking about. What I mean is, we may need to redefine the meaning of venomous, in the context we use it. We are now able to test for things we weren't able to in the past. Heck, maybe someone can test human saliva and find an enzyme that has "venomous" properties. Cobras, Rattlesnakes, Heloderma, etc., all have well defined "venom systems", even some of the rear fanged snakes have somewhat defined "systems" though not as complex. These systems include the venom, venom delivery method (fangs, grooved teeth), and actual venom producing and holding methods. IMHO, I don't think just because some of these animals have an enzyme or two in their saliva, that they are venomous.
I didn't read the account of the Savannah (sp?) monitor bite, but as mentioned, it sounds like an allergic reaction, which can range from simple localized itching, and redness at the site, to a more generalized rash or hives, to a full systemic anaphylactic reaction (a true life threatening reaction). Venom could cause such a reaction in people, but so can just about anything that a person develops a sensitivity to. Just the past day or two ago, a teen age girl died of anaphylactic reaction from kissing her boyfriend, who had been eating peanuts, which she was allergic to (according to the news). We humans are becoming more and more sensitive to "irritants", cases of asthma, and allergic reactions to lots of things, that use to be "harmless". I've been bitten by Savannah's as well as many Species and ssp. of Garter Snakes, and Water snakes native to CA, AZ, TX, as well as one or two eastern states, and never had any problems. Like I said, I haven't read the latest, but at this time I think it is "much ado, about nothing" or whatever that saying is.