I personally wouldn't write it off so quickly with that view, though I understand and can appreciate other's views who do see it that way.
The fund of funds concept is nothing new. Fidelity and other fund managers do the same with their Target Date funds. There are even hedge funds that utilize a fund of funds approach. It's simply an amalgamation of (their) other funds with varying allocations to attain a desired risk/return profile. The expenses will be somewhat higher and they do earn it (in my view) - they do the analysis and automatically maintain the proper allocations across the component funds to generate the risk/return profile which the fund is targeting. They are "actively managed" funds in this sense.
Folks who critically focus on fees/expenses will immediately brush them off as a result of the fact that they are somewhat higher, though still low in general when compared to historical actively managed mutual fund fees. However, looking at the component funds, it may be difficult for an individual to get an equivalent profile using only a few component funds. If you choose a VG 4 component fund with lower expenses, that may meet your criteria, and work for your risk/return needs. For others, it may not.
I'm not weighing in on how the funds have performed or will perform in the future. I'm simply pointing out that there is a place for them and other folks who have labelled them as garbage outright may not be considering all the aspects of them.
If you check the Fidelity funds details, you'll notice that they all had prior Target Date fund names (was previously their Income Replacement series of funds) - so these are not new, they simply renamed them and refocused their marketing of them.