Sorry WD but I fail to draw the same conclusion as you.
I read that particular post. I fail to see where someone was putting words in someone else's mouth so to speak.
First, there is the quote. The changed word was put in caps and bolded. This was to let readers know (a) the quote was modified and (b) what was modified. From what I have seen in the past, this is typically the accepted method of taking a quote and modifying or expanding upon it.
Second there was the comment to the effect of fixed it for you. This would indicate that the above quote was modified or expanded upon and additionally would indicate that the modified quote is the idea(s) of the person modifying and not necessarily (but could be) that of the originator.
And lastly, nowhere was there any malice or ill intent on the part of the person modifying the quote.