How to understand this sentence?

We don't need much excuse to make up new words.

It appears to me that this was not written by a native speaker of English. It constitutes one long--tediously long--introductory, dependent clause, which is not succeeded by an independent clause. I'll give you an example which may help you to understand.

In this age of jet-powered passenger airliners.

In this age . . . what? This is a dependent, introductory clause which doesn't introduce an idea, an expression which completes it.

In this age of jet-powered passenger airliners, the arrival of a large, square-rigged sailing ship causes a great deal of excitement.

"The arrival of a large, square-rigged sailing ship causes a great deal of excitement." This is an independent clause which completes the sentence. It is called an independent clause because it can stand alone. It is a coherent expression of an idea, whether or not the dependent clause ("In this age of jet-powered passenger airliners") is attached to it. The dependent clause does not coherently express an idea.

I'll tackle that sad attempt at English in another post.

As Roger has pointed out, the author is saying that we (English-speakers) don't need much reason to create new words or expressions.

The problem is that the attempted sentence is a very long introductory clause, a dependent clause, which cannot logically stand on its own. It doesn't mean anything. "In these days . . . blah, blah, blah . . . and when . . . blah, blah, blah . . ."--what? An idea has been introduced, but not expressed. We are conversationally left waiting for the other shoe to drop.

Provocation is a really bad choice of a word. To provoke means to annoy or anger someone, usually deliberately. So you get angry, and get your revenge by coining a new word? I don't think so. It's a very poor choice of words. As for "the approval of print," i will observe that journalists are the bottom-feeders of the literary world. They'll print anything if they think it will sell. If that aborted attempt to write a sentence actually was written by a native-speaker of English, it most certainly would have been written by a journalist.

Im a native speaker and Id say this one way
"We coin new words all the time and the only reason I can see why we do, is because WE CAN."

Its not as brief as Id like it but its a start to a statement that is less bulky than the one you posted.