This a point that I find many people forget. In comparing an ARF with an annuity, many ignore the fact that an annuity consumes the entire fund on the day of purchase. Prior to the existence of ARFs (around ten years ago) the only drawdown vehicle available was an annuity. You handed over your fund in return for a guaranteed income. Your fund was gone from day one.
If an ARF fund is growing at 4% and you're withdrawing 5%, it's still declining in value at a rate that will far outlive you. Which is more than an annuity will ever do.