avoiding verbing and adjectiving nouns. Try not to verb nouns or to adjective them. So do not: critique style guides
I am not sure what to make of the section on Americanisms, which is quite scathing regarding its usage. I have grown 'overly' fond of some of them.
The Guardian/Observer style guide is more forgiving. https://www.theguardian.com/guardian-observer-style-guide-a