Your assumption that advanced drivers routinely don't indicate is completely incorrect
I made no such assumption. Please don't misreport what I did.
You are correct, of course, that we humans are fallible and everyone makes mistakes but advanced drivers are less likely to do so than drivers who indicate by rote and are statistically less likely to be fully concentrating on what they are doing or what is happening around them.
1. I don't care if it's less likely because it's still going to happen and increase the danger to other road users unnecessarily. At no point did you address this case.
2. I'd like to see those statistics, please. I hope they're not just comparing people sufficiently interested in driving to pay the IAM with drivers so incompetent that they indicate by rote.
3. I'd also like to see the calculation that shows that the reduction in injury from not indicating when you don't see someone is greater than the increase in injury from an IAM moving without indicating when they didn't see someone.
[...] Regarding the use of signals in the Highway Code; Rule 103 says "you should always use them to advise other road users" so, by extension, if there are no other road users you shouldn't use them.
That's a logical inversion error, not an extension. Rule 92 says "You MUST be able to read a vehicle number plate, in good daylight, from a distance of 20 metres (or 20.5 metres where the old style number plate is used). If you need to wear glasses (or contact lenses) to do this, you MUST wear them at all times while driving." so by similar flawed inversion, if an IAM member is not driving, they mustn't wear glasses. 🤡
How about reading what's in the highway code and not making stuff up that's not there?
You are clearly not a fan of advanced driving techniques even though they are advocated by the emergency services and most modern driving instructors. Are they all guilty of careless driving? It's okay that we don't agree - we are all entitled to our own opinion, but I prefer my opinion to be based on recognised best practice and if it's good enough for the police, fire and ambulance services, IAMRoadsmart and RoSPA then it's good enough for me too.
I think some advanced driving techniques are good but the advice not to indicate if you don't see another road user is dangerously flawed for the reasons I gave above and that advice (and especially the absurd defence of it) should result in IAM losing its reputation.