But, despite what people frequently seem to think, making lots of grammatical errors does obscure your meaning, especially if you're trying to communicate technical or complex thoughts. Without knowledge of grammar, you're limited to general, simple sentences.
Complex thoughts require simple sentences. The reader already has his hands full trying to understand the idea. He does not need to struggle with parsing text too.
Unless, of course, you are trying to make simple thoughts seem deep, complex and subtle, in which case - and no other - obscure, riddle with unnecessary grammar structures, and generally flourish - in the gesturial, not growth, sense, for the latter would just make no sense in this context, altough it might be an appropriate pictorisque description for the metaphorical tangle of such sentences, if we consider words to grow like vines in a jungle (tropical rainforest, but the underbrush of any thick area of vegetation might do as a metaphor for such off-tangent rambling) - your sentences away.