seems a few variations on the route avoid A82 but is that really necessary as I travel fast dual carriageways to work every day !
If the A82 was a fast dual carriageway it would probably be fine... it's the fact that the points of concern are busy narrow twisty single carriageway roads and its people's ability to stuff their vehicles into the surroundings and other vehicles that's the problem!
I can't find AADT or KSI stats right now but the reality of roads outwith the central belt, midland valley and Mearns is that some days they are nose to tail crawls and on other days they are deserted.
And so can be anywhere between a pleasure to ride on (the A85 at night or on a drizzly wednesday morning is fantastic for making progress) or an absolutely nightmare (A hot and Sunny Holiday Monday)
For the A82 the specific bits of concern are from Alexandria to Tarbert which is a slightly shorter route to the rest and be thankful than going road the coast from Helensburgh, which I've ridden at 3pm on a distinctly average Wednesday and hated (there is a NMU route on that section though) and from Fort William to Ballaculish; the rest is pretty much deserted most of the time as the AADT stats given for the Crianlarich Bypass (the only place you're likely to be heading for on the A82 after tarbert) are around 3000.
Depending on how the A9 dualling work is getting on may also affect the A82's traffic volumes as that's looking at very long sections of roadworks which may divert some tourists up the A82 that would otherwise take the A9 route.
Also don't forget the "Private Frazer" element of this...
Stats I've found
AADT stats for the A82 Corran Ferry to Lochybridge are 8800 vehicles a day , that's annual average so summer and a nice day in summer are considerably high to make up for the low traffic in winter.
A82 is "more dangerous" than the A9
https://www.inverness-courier.co.uk/News/A82-twice-as-bad-as-A9-for-crashes-07102016.htm