Moderator note: Vaccine Skepticism does not mean that viruses do not exist (or cause diseases).
I tried to discuss this topic somewhere else, but no-one responded.

I saw this "farewell to virology" posted a few times on Telegram channels.
Not seen this one, but had too many bad discussions with no-virus people.
The "no-virus" is often used as a "liberty" standpoint to oppose vaccines or measures.

But it is also a trap, because there is also a lot of bad science combined with the "no-virus" standpoint.
And it has attracted a lot of people that have limited knowledge about biology.
So people just insert their bias against certain things.
So it is hard to get actual in-depth statements from the no-virus side.
While I have seen full in-depth lectures on viruses with a lot of observational data.

Viruses in short:
Viruses are cell-components (or parts of cells) that have gone rogue and spread themselves.
They can not live on their own, if they can even "live".
There are "giant viruses" that are parasitic.
The smallest viruses are just spreading cell-signals and trick other cells into replicating them.
They can not live on their own, and not for a long time (sometimes just minutes).

They can be observed, tracked and reverse engineered.
By reverse engineering, we have developed viruses that can change your DNA.
This was popular in gen therapies and DNA modification projects.
Reverse engineering also brought us "gain of function" which produced a lot of new potential diseases.

The immune system has specialized systems that fight viruses.
Even on cell can fight viruses and fight mutations in its DNA (DNA repair).
The small viruses depend on very specific conditions, and are often harmless.
A virus can not do so much harm, but it is often the reaction of the immune system that causes harm ("inflammation").
This unlike the mRNA injections that also cause harm by turning the cells into toxic spike-protein factories, and trigger auto-immunity by invading cells in a non-natural way.

The biological cells are full with very complex "micro-machines" that are not understood very well.
Due to the bad understanding of these very complex systems, people have added bias in their theories.
And this bias causes people (on all expert levels) to skip observational science, and fill in details that are not true.
This happens on both sides.
But the last years, I noticed a lot of "no virus" people make claims that are not in line with observational science.
Maybe this one is different.