"...what is the value of an OpenClassrooms "degree" in the US job market?"
As an American who has worked for 28 years in Architecture, Engineering and Construction I can easily state that online degrees have ZERO CREDIBILITY. And ZERO VALUE. Hiring managers simply will not take the risk.
A firm may hire a CAD drafter who was trained online but only for very basic work such as redlines and revisions. The depth of knowledge just can not be acquired online that is acquired in a traditional classroom setting that promotes interaction between peers and professors.
Online learning is in fact trying to make an autodidact of every student which is of course absurd.
A Professional Degree can not be awarded for online learning.
Would you want to live in a house designed by an Online Engineer? Or have your appendix removed by an online Doctor?
Online learning creates an a new layer of education that is trying to find a role someplace between a High School Diploma and a two year Associates degree.
One thing though is for certain. When education is "FOR PROFIT" can it really be called education?