I would say the author did a good job, translating this into laymen's terminology without watering down the content too much.

Try reading the actual paper to see what "science speak" looks like.

The paper basically says that new extremely effective antibodies were discovered in people infected with covid-19, and they work on almost all known variants of covid.

Here is that in science speak from the article.

" SARS-CoV-2 spike (S)–reactive antibodies were identified through B cell sorting with S protein–based probes. WA-1 live-virus neutralization assays identified four RBD-targeting antibodies with high potency [half-maximal inhibitory concentration (IC50) 2.1 to 4.8 ng/ml], two of which were derived from the same IGHV1-58 germline but from different donors. Antigen-binding fragments (Fabs) of these antibodies exhibited nanomolar affinity to S (2.3 to 7.3 nM). Competition assays and electron microscopy indicated that two of the most potent antibodies blocked angiotensin-converting enzyme 2 (ACE2) and bound open conformation RBD, whereas the other two bound both up and down conformations of RBD and blocked ACE2 binding"