Covid-19 vaccines do not contain "obscure" ingredients like graphene oxide, Reuters reports.

Well that's what Reuters is reporting, but this is not a statement claiming the accuracy of said report. This is only a deferral to others.

But it is usually to protect trade secrets, PoltiFact reports

Political fact reports? Not sure what business they have reporting on vaccines, nor do I see any legitimacy in a statement of 'usually'. Conjecture is not the bases of facts.

"Covid-19 vaccines do not contain "obscure" ingredients like graphene oxide, Reuters reports.

Well that's what Reuters is reporting, but this is not a statement claiming the accuracy of said report. This is only a deferral to others.