1 I'm sure all other members can read & many will be well educated and/or capable of interpreting a wide variety of news articles, technical papers and so on. It would be correct and polite to recognise that such skills are not unique.
2 There IS new information in the article & in particular, I believe it's not been shared here before.
3 Whilst antibody life is not encouraging, the likely long life of T-cells is considered to be very good news by some of the experts. Whilst there's no certainty, I note quite a few capable people who have assimilated the data now expect that vaccines will be the solution to Covid. My best estimate is we get vaccines rolled out within 12 months, but of course it cannot be 100% certain.
I find the idea that T-cells from the 2003 SARS outbreak might be a contributor to reduced severity of infection in Asia to be both interesting and new (to this site).
Even if we have a vaccine which (for example) turns covid from a potentially severe disease into a mild one, I would be delighted.