If they wanted to be corrected, then I'm sure they'd ask. The English language - or at least the standardization of it - might be important to you, but perhaps not to them.
I like to see people at least making an effort in their writing, enough to make it legible and easy to read, but seeing people dictating what, and what not, one should learn in life is equally annoying. Especially when it's something as simple as an apostrophe in the wrong place.
The English language is a fascinating thing. It wasn't governed by a great dictator in the sky. You can't for one second suggest that we're losing touch with it. It evolves with our needs of communication. Historically it's only briefly settled into a standard form, amalgamated from countless regional dialects - of which snippets still exist 'the day'. The fact that most of us are now literate in the western world is a huge achievement in itself.
I do love the thoughtful and descriptive use deployed by great writers, but it will change over the coming years, becoming more effective through the mediums in which it is used.
It's a shame that you see so many mistakes in published works too. Like in the news, mentioned above. But when updates are being tweeted every two minutes, who exactly is going through with a fine tooth comb? Unless you'd like to go back to the printed press and say goodbye to the Internet, it's going to happen.. Pros and Cons all round.