We don't need to provide an alternative explanation when falsifying a preexisting one, 'Falsification is independent of replacement."

Exposing the fraud of abiogenisis doesn't mean we have to offer up an alternative explanation. Saying that, if you falsify something that is the basis on which other theories of 'science' are built upon, then logically, those theories are also invalidated.

This is why I believe people find it difficult to concede any points that go against their beliefs, because they know what a single concession can lead to - having to rethink and reexamine many of our foundational beliefs and understandings. I've been there, and I have become much less resistant to changing my mind, even if my newly adopted belief/understanding is incorrect.