No, it isn’t remotely true. Only by an absolute lack of understanding of genome sequencing technology could support such a claim. SARS-CoV-2 is a particularly useful example to illustrate how this claim makes absolutely no sense. https://www.quora.com/Is-it-true-that-what-virologists-call-a-viral-genome-is-a-digital-artifact-something-assembled-from-digital-fragments-in-a-computer-rather-than-a-biological-object-extracted-and-verified-from-nature/answer/Coherent-Market-Insights-1?ch=10&oid=1477743870982209&share=03ddab4f&srid=uTm6RG&target_type=answer