Virus believers are arguably worse than flat-Earthers. Flat-Earthers, at least, are debating the shape of something that unquestionably exists—the Earth. Their disagreement concerns the form of a real, observable object.
In contrast, virologists and their supporters debate the properties, behavior, and mechanisms of entities that, from this perspective, have never been properly demonstrated to exist as isolated, purified, and fully characterized physical objects. Instead of working with a clearly established entity, they rely on indirect interpretations and assumptions about what may be present in complex biological materials (e.g., cell culture or debris).
This creates a situation in which elaborate theories, classifications, and debates develop around something that has not been demonstrated in the strict scientific sense required for physical entities. In that sense, the discussion becomes even more problematic than flat-Earth claims: at least the flat-Earth debate concerns the geometry of a real planet, whereas the virus debate centers on entities whose existence remains unproven.
Yet they present themselves as science experts or scientists—an honorable and prestigious title. What a shame!