Why surprising? Did I express myself unclearly?
Obviously.
The starting point was your statement "No one will strip themselves bare down to the last cent from the outset." Which clearly refers to the disclosure of financial circumstances.
Every sensible person keeps a reserve in the background. The bank will not demand that all available funds be used as equity. The buffer of the famous three months' net income should be allowed to remain.
That is correct – in case of doubt, however, the bank still wants this buffer to be proven. For good reason.
Is there really anyone who goes to the bank and says "as of today I have a total of xxx EUR in all my accounts and that is my equity"?
As I said, we are talking about two different things. Your assumption that the bank wants all demonstrated equity to be included in the financing is wrong. In short: Yes, the bank generally wants you to disclose your financial circumstances (i.e. to "strip yourself bare") – No, it does not necessarily mean that you will have no reserves afterwards.