Dude, you don't actually know very much about this case.
There were several loans in question, but the major one used the Doral golf club as collateral. But you know what? Selling a golf course is really fucking annoying and the bank really didn't want to have to do it, because it adds a lot more uncertainty to the transaction.
So they needed a personal guarantee from someone with a strong financial position.
For reference, this is from the testimony from the Deutsche Bank loan officer on page 9 of the decision that I linked to you already.
So enter the Statement of Financial Condition. This was a 100% necessary document from Trump that was used to demonstrate his "strong financial position".
The statement of financial condition listed Trump's assets, and was used to prove that he was meeting the terms of the loan, for example proving he had a total net worth of $2.5 billion.
By inflating the values of his properties, Trump was inflating his total net worth and lying to the banks about his worthiness as a debtor.
It's pretty fucking hilarious that you act all high and mighty but prove you know fuck all about this case.