[boxed names]
Use of square brackets is the official typographical practice for replacing part of a quoted passage to clarify or give additional context.
Quote probably ended "and, in ways, failed him". "Him" would not have been clear without the part that preceded the quote, but if they replace it with the name, they are changing the quote. So it goes in square brackets to show that it is not part of what the guy actually said.
Another common use is […] to represent text that has been removed to shorten the quote.
Looks unusual because, even though it is the official way of doing it, most news outlets seem to use (parentheses) these days instead of [square brackets].