The part where that service doesn't exist and isn't close to existing.

https://www.genewiz.com/public/services/gene-synthesis/custo...

Distance from mailbox to live virus is a few days of bench work from a semi-competent biochemist.

And yes, this service claims to have safeguards. Does every service? Does every future analogous service? Are those safeguards guaranteed to be robust against totally novel pathogens?

Answers: No, no, and no.