That's just you making something up. Elon waived his due diligence but that doesn't have anything to do with the lender. The lender can back out unless they also have some type of clause in which they are lending it without any concern at all, which of course they don't.

Even if that is the case, it is between Musk and the lender(s). None of twitter's business, not twitter's problem (directly).

If one or more of the lenders did back out it might not look good for then as a reliable partner for future deals (not just with musk) - would they take that reputational risk? Especially right now when Musk is taking any flack as someone who doesn't keep their word.

The lenders agreement is with Musk, not Twitter