The only way I would consider paying for a course like this is if, upon successfully completing it, I would not have to do the technical portion of the interview at companies I applied to. They would accept this cert and just do the soft skills interview.
One could argue that CS undergraduate degrees are perfectly suited for this purpose. FAANG & Co don't seem to care for that. You've successfully passed a few dozen exams at MIT or Stanford? Well, let's make the reasonable assumption that you have no clue about algorithms and data structures and start with our third whiteboarding session, that should be a way better proxy for your knowledge.
They may very well be, but is the quality of signal truly worse than that which an interviewer can extract from a few hours of your writing code on the board?
I think that’ll never happen because the incentives of the cert granting institution and the company hiring will never be aligned (or aligned enough to matter).