I had to laugh when I saw the last two replies. The other day I was approached by someone who say an 8% return for their age. I found myself doing that finger gesture putting quotes in the air as I said the word 'return'. Of course, that was part of a longer dialog, where I was able to calculate and show the actual returns assuming various dates of death. I can't quantify the insurance company default risk, but I can easily reduce the exercise to a break-even point beyond which the annuity outperforms current risk-free rates.
I think the quotes are appropriate just like the Asterisk stamped on the homerun record baseball. It indicates the word is used with a certain meaning.
At least for a bond, we have current yield vs yield to maturity (YTM). For Elle's purpose, the annuity could show yield to expected MYM (meet your maker), as well as the current promised yield. I find that to be a reasonable way to show such a product.
Joe