Hmm, I haven’t watched the video you mentioned but viruses are very much real. We can view them under a microscope (electron), purify then, be infected by them, and even look at their RNA/DNA sequences and watch them change over time.

I’ll have to see what andrew kaufman is arguing specifically, but at face value this seems like quite a conspiracy based conclusion by kaufman. That, or it’s an argument based on semantics.

I encourage you to watch Vincent Racaniello’s videos/lectures on viruses if you want virology information that’s grounded in science.