The US copyright model is for the advantage of rights holders (i.e. die Disney corporation), not individual creatives. Especially when many creatives do not work alone and contribute their output to a larger product (like a movie). Their inclusion as individuals seems almost incidental.
In opposition to a place like Germany, where you can't ever fully reassign copyright and always retain some rights (Urheberpersönlichkeitsrecht), for instance to object to a use that reflects badly on you or to insist on being credited. Some of these rights should really be standard; the games industry for instance makes it a habit to strike people off the credits as punishment for leaving a project early or attempted unionizing (as attempted with Raven Software QA workers recently).
At some point, look at the git history for who wrote Open edX, and at some point, look at the git history for who created the first edX course. Compare that to the official narrative, and try to find their names anywhere in PR materials.
The point was more about deliberately withholding credit as a form of punishment. That many less deliberate instances of this would (and in Germany, do) occur even if such a legal obligation was in place is clear, it's just a matter of them being actionable.
In opposition to a place like Germany, where you can't ever fully reassign copyright and always retain some rights (Urheberpersönlichkeitsrecht), for instance to object to a use that reflects badly on you or to insist on being credited. Some of these rights should really be standard; the games industry for instance makes it a habit to strike people off the credits as punishment for leaving a project early or attempted unionizing (as attempted with Raven Software QA workers recently).