Your ear will come clean off with the
sudden application of as little as 6lbs of force. Therefore, unlike a helmet, grabbing your ear can neither break your neck or strangle you.
Sure, there are other methods by which an aggressor could strangle you or break your neck, but why hand it to them on a plate?
This is but one tiny tip from an internationally taught syllabus, one that has been written following the review of literally tens of thousands of incidents of tactical contact between cyclists and assailants. If you've conducted even more in-depth research and know different then be my guest, but having both taught this and, perhaps more importantly,
experienced it myself first hand on multiple occasions, I'll stick to what I know works.
When youve done it for real a few times please let us know how you got on and we can compare notes.
If youve the shekels its worth buying this
https://www.amazon.co.uk/Complete-Guide-Public-Safety-Cycling/dp/1284256138 which covers one of the two syllabus' that Im qualified to teach. The other one you cant get unless youve signed up as a member and done the course yourself.