I think there's a lot of kind of scaremongering with this. If NV implemented captcha on the API too I don't think it'd be possible at least for many of the simple bots and most if not all are.
However, creating something to notify only is not too difficult to do but ordering would need to be manual
According the users there, snatcher opens a checkout page when the card is in stock. So you just checkout as guest. They also say the sniper is able to checkout fully but I've not set that up. I'm just worried with snatcher Nvidia will ban the IP and any orders from that IP.