GMAT Sentence Correction (SC) | Negativity + so much as

Hey,

Somewhere on the internet I found the following advice for the GMAT:

Negativity + so much as = always wrong

Could someone please help me with figuring out how what the author referred to?

I can't think about an example with a construction like that. What would be the correct way to say this in an apropriate form?

I'm glad about any answer. Thanks in advance!

---