A lot of American and Canadian retirement accounts are in "age adjusted" funds, which are really just a mix of mutual funds or ETFs of bond funds and stock funds.
If you check, you'll find most large firms have an S&P 500 index from Vanguard or Fidelity (like the VINIX) which has an expense ratio of around 0.02 or 0.04 percent, and a Total Stock Market index with an expense ratio of around 0.05 or 0.07 percent and a Total Bond Market index with an expense ration of around 0.10 or 0.12 percent.
You could replace the "age adjusted" fund that charges you 0.40 to 0.65 percent with an automatic stock fund and bond fund allocation, e.g. 70/30, and then just reallocate periodically. Cost to you drops from 0.40 to 0.05 percent, in many cases.
That's all these "wealth firm robots" really do. You can buy the underlying components and pay less.
It's the fees that kill you. You don't notice them when returns are 12 percent, but when the market is crawling (like today) with 1-2 percent returns, you sure notice the fees that siphon off up to 1/4 of your earnings.