It's hard to be anything but anecdotal in this regard, and I can appreciate that it's difficult to guage where it lies between "it'd be nice to have" and "I can't operate without this" for all users.
To elaborate and provide context for my own needs - I have a Virgin Media SuperHub 3 that was provided by my ISP, which is the standard model given out to new customers, as well as free of charge to existing customers that either ask for one, or opt into packages above 240Mbps, as their previous generation can't handle more than that. Currently, it's possible to get the firmware rolled back to a version that supported NAT and didn't have IPv6 support as I mentioned previously, but as that specific router is plagued by the latency issue with the Intel Puma 6 SoC, as well as any other based on the same chip, I imagine that rolling back won't be an option beyond a certain point
Good to have a concrete confirmation that it's on the roadmap, at least