https://www.tomshardware.com/pc-components/gpus/chinese-work...
There's also unreleased Nvidia engineering samples of cards with doubled VRAM like this - https://www.reddit.com/r/nvidia/comments/1rczghu/update_unre...
There are some on sale via eBay right now. The memory controllers on some Nvidia gpus support well beyond the 16-24gb they shipped with as standard, and enterprising folks in China desolder the original memory chips and fit higher capacity ones.
To the original point, it's safe to say that highlighting a nationality with regards to trust is baseless and without merit, as would be for any other topic (men/women from x are y, z food is better here, etc..). Real life is much more complicated and nuanced past nationalities. Some might call it FUD (fear, uncertainty and doubt) but there's always a deeper rationale at the individual level as well.
It does seem like pretty low risk in this specific case so I agree OP's comment was bit over the top, but I would have no way to make anything resembling even an educated guess as to how far their programs go.