And this is why it's frustrating when people insist on doing everything through the comments sections in kickstarter.
Update 6/update 7 is when the change happened to allow the smaller sizing, the reason behind it isn't specifically mentioned on the update (apart from the size of blank titanium rod) but was talked about in other places including the comments section.
Prototypes were in stainless steel. Inlays were redesigned completely to suit titanium. These were well documented changes. Being prototypes there is the understanding that the prototype is not the final version. Changes in design from prototype to release are neither fair nor unfair, they're done to maximise performance while retaining visual style. Form does still follow function.
Remember during the project, back when (as I mentioned just before) the possibility of smaller sizes was raised?
This was only possible because of the inlay change, otherwise the minimum circumference of the ring would be larger. Because of the larger inlay which was shown to work less well on a wide range of devices the decision was made to alter the design to incorporate two of the same smaller Inlays with the added benefits of better, more consistent read on mobile devices and the possibility of smaller sizes.
I honestly fail to see the need to 'support my claim' to anything, you received a reasonable response to your feedback on the ring redesign based on my understanding. I spend a lot of my time reading and watching videos and basically understanding as much as I can about the things I'm passionate about, this includes the nfc ring. You then receive the benefit of condensed knowledge which is used by me to help out. I don't expect thanks for this but now you're hovering on the edge of rudeness. My time is volunteered simply because I love this project and believe in it. I'm not here to be blamed for the fall of the Roman empire - if you want to do that then I'd expect you to be paying my salary as an RF and electronics technician with decades of experience in the fields.
Just to reiterate - despite the confusing nfcring team tags on lafunamor's and my accounts we are volunteer help.
So feel free to continue to ask questions or provide more actual feedback, I will help where I can, but please remember to be polite in your interactions with those who are here only to help.