That's insanely bad advice, yes GPU memories was a tad anemic only a few years back so it could've been an option, BUT the introduction of raytracing (RTX) mean

That's insanely bad advice, yes GPU memories was a tad anemic only a few years back so it could've been an option, BUT the introduction of raytracing (RTX) means that the GPU's needs to have a full world in memory so memory sizes has started to increase quickly, this is entirely disregarding AI workloads that might have had an even bigger impact on memory sizes. A highend consumer RTX 4090 has 16000 CUDA cores and 24GB of memory, that's 1.5mb of memory per core.