Yes - to make a lot of money on the expense ratio.
I guess if you really didn't want to learn a damn thing about modern portfolio construction a taget date fund is your best bet. However, it is incredibly easy to buy 4-6 ETFs that give you the same thing at a lower cost. Yes, you have to do a little work to re-balance these funds, but that is also an advantage to this approach as you have control over the re-balancing and can do it in a way that is more tailored to your specific situation.
I highly recommend the Risk Parity Radio podcast.