In addition to all the points that article makes, two more:

1. There are a lot of people that believe they already had Covid, but actually didn't.

2. A "vaccinated or recovered" policy is even harder to enforce, as there are vaccination certificates but no recovery certificates. (Yes, vaccination certificates can be faked, but it seems likely to me that a significant part of the population would be willing to lie but not falsify documents.)

There are tests for both presence of antibodies (quick and cheap, you can get one at many pharmacies or quick-care clinics) and T-cell immununity (IDK the cost or availabilty of those).

She's lying. Notice how she links to no actual datasets.

On the contrary, all the big datasets show clearly a long lasting, low risk of reinfection for the recovered. Here, I include an actual dataset (https://www.medrxiv.org/content/10.1101/2021.03.06.21253051v...) unlike "Virologist Sabra Klein".

Yeah, I personally just don’t get it. Your whole life you are told once you get the chicken pox, you won’t get it again. Once you get this year’s flu variant, you won’t get it again.

What is different about Coronavirus?

That sounds a bit simplistic. The common cold is also a viral disease, and people get it relatively frequently. AIDS is a viral disease with famously peculiar properties, constantly mutating and masquerading. Not all viral diseases are the same.

So, again, theme of the day, have we not figured out the difference between aids, the flu, the cold, and the coronavirus? It feels like everyone is running from the truth here.

I'm not sure what you mean. Biology is incredibly complex. It would be hard/impossible to compress the "differences" into simple statements, I imagine.

Is that true? We’ve classified a lot of things in life. The entire taxonomy of animals for example. No, I’m sorry, this is not beyond us. Where does Coronavirus fall? It’s not HIV, that’s for sure. Is it closer to the flu, or not?

I think we’re done playing this game as a society.

Coronavirus is a kind of virus. Some of the many strains of the common cold are coronaviruses, so are COVID-19 and MERS. Flus are their own kind of virus, “influenza viruses”, but I only know what I know from quick conversations with actual biologists, so take it with a grain of salt. I don’t know whether taxonomy is necessarily helpful here. Some frogs are poisonous, some are delicacies, and they come in all sorts of colors, abilities, and sizes.