lower "performance tier" aka 60-class GPUs! This was further cemented with "mainstream crowd". With this being a 60-class thread and 16GB cards landing squarely in this tier, the intent is crystal clear. For the past two generations, in this tier, both AMD and Nvidia have offered 16GB models alongside their 8/12GB counterparts. So its reasonable to expect that 16GB will continue to be supported in this segment moving forward.
Those cards have not sold, though. Let's do some math.
Per the latest
Steam hardware survey, 5.9% of all GPUs have 16GB of VRAM. First, we need to take out all the GPUs that only have 16GB options and are popular enough (at least 0.15% market share) to be listed separately. Those are the 4070-Ti Super (0.86%), 4080 Super (0.81%), 4080 (0.76%), 5070-Ti (0.39%), 7800 XT (0.37%), 6800 XT (0.30%), 6900 XT (0.20%), and the 6800 (0.20%).
We take those out of the 16GB number, and we're left with the remaining 16GB GPUs having 1.54% market share.
There's only two other GPUs with 16GB options listed separately, the 4060-Ti (3.11%) and the 5060-Ti (0.21% already!). Even if we say that that entire 1.54% is 4060-Ti 16GB (which it absolutely is not), that's still less than half of all 4060-Tis sold. In reality, I'd guess maybe ~1% or so of the remaining 16GB number are 4060-Ti 16GB cards at most, given how many possible other 16GB cards there are.
Also, I'm not quite sure how or if Steam integrates iGPU memory into that VRAM stat. Windows allocates half of system ram to the GPU, so at least in Task Manager, if you have a laptop with 32GB of RAM, your iGPU will have 16GB of "GPU Memory." If Steam takes that same number, then any laptop with only an iGPU and 32GB of RAM will also report as a 16GB VRAM system, and there are LOTS of iGPU only systems.
However, that's speculative, so at most, I'm willing to grant the 4060-Ti 16GB being ~1/3 of all 4060-Tis sold.
I really wish that Steam broke these cards like the 4060-Ti or the Arc A770 with two different VRAM configurations apart so we could get an exact number.