I have been in a fair few 32gig ram discussions with people.
The big gaming pc reviewer type people, still push the idea 16 gig is all you ever need, and 95% of people argue that as well.
But I can only go by my own experience, the first problem I had was I had to keep closing chrome when playing games, 16 gig didnt cut it, and I felt that was constraining me so the PC got upgraded. The second issue is Final Fantasy 15 has some really bad memory leak bug, and people were discovering the game was using up to around 45-50gig of virtual memory (RAM and pagefile combined), if you let it run long enough, obviously a 32 gig system made it much more bearable vs a 16 gig system, with 16gig, you would have to restart game every 5-15 mins, vs every 1-2 hours on 32 gig.
Not to mention if you work with virtual machines, ram is going to be your primary resource, even ahead of cpu core count.
Oh yeah I'd forgotten, I was also playing with PCI passthrough at the time so upgrading to 32GB meant I could allocate 16GB to a virtualised Windows VM.
I think the big gaming reviewers are mostly fair, 16GB is enough to run the game acceptably, they just never factor in things like big open world games and fast travelling around to areas still in the RAM cache. Which makes sense, they don't have the time to test every little improvement it might give.
There's also the fact reviewers will be using a good, potentially SLC NVME drive. Now with cheaper, relatively crap performing 3D NAND on the market, RAM can still be hugely beneficial even on a system using NVME.
I recently put a Corsair P1 in my NAS as the boot and extraction drive, was utterly appalled at how bad it performs. The Western Digital Blue SATA SSD performs better on average, because the P1 bottlenecks FAST causing much more obvious stalls making the OS unresponsive. When the whole point of going NVME is to make the OS MORE responsive. The sad part is, my gaming laptop also came an Intel 660P, which is basically the same device. For gaming workloads it seems okay, but its a far cry from the Samsung 850 EVO in my desktop.
In a broadband analogy, I'd rather have a consistent 50Mbit than a system where it peaks at a vastly higher speed, but throttles down so the average speed works out the same but you're sat watching 1K/s for minutes at a time.