What that headline means is that the United States has been considering wild chimpanzees an endangered species but considering chimps in cages for experiments as perfectly non-endangered, since they've been nice and safe in the cages. Except for the experiments being performed on them for developing AIDS vaccines and other such non-endangering fun time-passers.
After years of protests from scientists, the entire species is recognized as endangered.
Jane Goodall responded with "It shows an awakening, it shows a new consciousness. We should all raise our glasses tonight.”
Raising a glass arounds chimpanzees might present other problems, but the general idea of celebration is agreeable. Except for the underlying problem that the chimps are endangered.