This seems to be a mistake. The original documentation, from 2013, reads:
The World Wide Web was built over the Hypertext Transfer Protocol (HTTP)
and the Hypertext Markup Language (HTML).
A User Agent, like a web browser, uses HTTP to request a HTML
document. The browser then formats and displays the document to its
user. HTTP is used to ...
If it were the writer smiling, there should be some punctuation:
I look at her, smiling.
In spoken language, you should be able to "hear" the punctuation in the form of a pause.
As written, without a comma, I would have to assume that she is smiling.
Consider the identically phrased example:
I listen to her singing.
I'm fairly certain you don't ...
You're looking at two separate idioms:
"Cranked out" - to produce something in large amounts.
"With abandon": showing a complete lack of inhibition or restraint.
Your assessment of the phrase is pretty accurate - it means they mass-produced something with very little care or concern for quality.
The use of more ands than customary is a figure of speech called polysyndeton.* Its purpose is to…make the sentence longer. In this case, the extra ands in place of commas emphasize that the list of states is haphazard and incomplete.
You are right that the following sentence is a fragment. Properly, it's part of the previous sentence, in apposition with "...
What you are looking at is prose written as it might be spoken extemporaneously, what is sometimes called a "stream of consciousness" - as thoughts occur to someone. When people are speaking in everyday life, they don't always plan out their sentences. You might begin speaking and have a broad idea of what you want to say, but you may not have thought about ...