No. Neither of us said 80% are H1-B. We were agreeing that 80% aren't actually obtainable jobs, but neither of us attempted to determine what percent is from what cause.
> The majority of the time, it is a company looking to sponsor an H1B for a role
You're right that I shouldn't have said 80%, but this still implies almost half of all job postings are ghost jobs from companies trying to hire H1-B visa workers.