In Pronouns^x, Spelling^x, Dialects^x

I have trouble figuring out why grammar experts get the blame for these There are a number of reasons why people might disagree over these usages colloquial vs written American vs British PC vs non PC prescriptivism vs descriptivism and even one or two examples where there are definite grey areas...

English is a Germanic Language of the Indo European Family It is the second most spoken language in the world It is estimated that there are 300 million native speakers and 300 million who use English as a second language and a further 100 million use it as a foreign language It is the language...