If you are looking for a way to (which might be the intended "deep text" request), you might be interested in Natural Language Processing (NLP) tools like Hugging Face or IBM Watson for sentiment analysis and entity extraction.
It may be a specific username or a small-scale online utility (like a text-pasting or "pastebin" alternative) that has not gained broad recognition.
There is no prominent entity or specific "deep text" known as in current mainstream databases or search results.