We've marked the comment off-topic and moved some of the replies to be root comments, where appropriate.
https://en.wikipedia.org/wiki/Big_Bang_nucleosynthesis
Not only that, but getting stars to form using pure hydrogen is tricky. That helium helped early stars collapse and ignite. Not seeing any helium in an early-universe object is a big deal, suggesting some sort of error.
- Corrected an infrequent issue with getResultingProtonCount that would cause it to always return 1 for certain origin bodies.
(In the merge request comments: "This why we don't let junior devs commit unreviewed code to critical branches, guys.")
The gas around it is pure hydrogen. We can't know what's inside. Could be stacks of little green men and ponies in there.
The fact that we can tell that it's hydrogen makes it extremely unlikely that light behaved differently there.