There are a lot o things windscreen fitters say; some don't know any better, others couldn't give a flying proverb. There is even a lot of talk about motivation. Not a conversation you want to start if you're a conspiracy theorist!I thought so too.
But when I explained where it was, in the 'black dotted' area of the rear-view mirror, the AutoGlass Tech said it need to be in clear glass 3'' from any border or edging.
I'll post up a pic tonight.
In the main, the 'we cannot repair if it is' rule book is a bit misleading. A lot of it is shullbit. I'd say it is more to do with the kit they use, or the training they're given (or lack of it to be precise). I have seen a lot of windscreens changed when the damage could - and should - have been repaired.
A bit of reading (not commercial links).
The Windscreen Chip they Didn?t Repair | Glasstec Paul
Botched Windscreen Repair. | Glasstec Paul
What Isn?t Clear About Windscreen Repairs. | Glasstec Paul