There are a lot of examples of individuals who have lost access to their accounts but no discussion of whether this is a significant proportion of google users. If I've got a 1 in 10 million chance of incorrectly losing access to my account that is very different to if there is a 1 in 1000 chance of losing access to my account. Without that context, you're basically just saying "losing access is a crap experience for the person involved" which is obvious from the outset.