Lately, I have stumbled upon several articles in Taiwan arguing around the subject whether English grammar is important. It is interesting to see so many people in Taiwan having so strong an opinion on this subject. You really have to ask yourself what your purpose of learning English in Taiwan is. You don't need to master English to survive in Taiwan. It is just a foreign language. I am picking up a little Spanish since my son is taking Spanish after school program. My purpose would be to be able to understand some words or to pick up some words that the Mexicans are saying or to make learning Spanish more fun for my son. To me, I do not intend to write in Spanish nor speak to Mexicans in Spanish, so grammar is not important to me nor is mastering Spanish my goal. To me, learning a foreign language is just for fun. So, ask yourself these questions. What is your purpose of learning a foreign language, in this case, English? Who do you want to communicate with? What means would you use to communicate with them? Of course, anyone can speak English but how good do you want your English to be? There is African American English but does Obama speak like that in public or write like that? By the way, please don’t assume that everyone will be able to understand Chinglish. Even though I do understand Chinese, I have hard time understanding Chinglish.
Truly, if you want to write a good article, grammar is very important. If you are speaking in public or making a presentation to your senior leaders, grammar is very important. It really depends on whom you want to communicate with.