In the tech industry, certifications for software/hardware platforms are regularly done online. There are people who their chance of getting a job, or a pay raise, are determined by these certifications.
So there are online tests where the stakes are significantly higher, thus the potential of cheating much higher, and it's all working out just fine. This hobby needs a breath of innovative thinking all over the place. Start with online testing. It'll attract new people to the hobby, who will in turn bring more innovative thinking and discussion.
It's a good thing. Let's give it space to grow.