Too much deprecated information online!

As we go along with the years, information and even old articles have remained, perhaps giving deprecated information, this seems to me a risk, you are not always careful about the date of what you read, but it can also be that it is valid, and can be confusing.
What do you think about it? Or do you know any site that publishes articles (in the field of software development / data science), which has the courage to delete its own old articles because it considers deprecated or modifying them properly?
An example can be courses about windows form