With all due respect, but I call bullshit on that. It might hold true for you, but in my experience most readers do not enjoy to read a story if it takes all their brainpower just to get what the writer wanted to say. There really is a reason why every publisher employs editors.3 Spelling and grammar is not important at all I had chance to read and still enjoyed stories that are written in a way that you need to use all your brain power do decipher what these words mean.
As long as you understand what you wrote it is OK to publish.