In shorter works, like posts, people don't use acronyms properly on the internet.

If I wanted to tell you about the GNU C Compiler (gcc), first I would spell out the proper name and then use parentheses to show you how I plan to refer to gcc in the future.

There is also a difference between written and spoken English and short posts, like this one, encourage the use of casual spoken English rather than the more formal written English like you see in books.

In other words, I completely agree.