Helium is detected on all exoplanets that are young, and was detected in stars from spectrographs over 100 years ago. Astronomers call young exoplanets, "stars", unfortunately. Like separating babies from humans as a distinct species, it is just wrong.
Why? Who knows. All I know is that these "firsts" are all in accordance with outdated theory and terminology that does not accurately describe nature.
What is cool though, the main book has about 600 unique I.P. downloads.
Some of them are paying attention. Too bad they aren't publicly acknowledging the discovery of stars actually being young exoplanets. It will probably take between 50-75 years before they publicly acknowledge this discovery.