I feel like this is interesting anecdotal evidence, but its asking the wrong question: what is the risk of losing a google account. if the scope and impact of the loss is significant enough (and in most cases it poses a serious impediment) then you may wish to revisit the google offered service entirely. It is well documented that google accounts can be rescinded for any number of arbitrary reasons, and remediation is either time consuming and cumbersome or entirely impossible.

There is a strong consensus forming in the tech community that core services like email or authentication should be delegated to google only as a last resort.