If victims still need anti-venom to prevent serious injury then the drug is much less exciting. As the article points out anti-venom treatments are expensive, unreliable, and hard to access; in other words not that great. Having more time to reach that treatment is better than nothing but is hardly world changing. Also, maybe I overly cynical, but I'm skeptical that this medicine will be affordable and accessible to most of the people in poor rural communities that make up the bulk of dangerous bite victims.
I do a lot of hiking and, like many folks who do the same, have been within reach of venomous snakes more times than I can count. A pill that can prevent serious damage from a bite would be huge; if it's effective and accessible.