I mean good lord. People are asking for an objective/verifiable measure of a skill that's entirely in the domain of your supposed education and/or work experience. How much more straightforward can things get? Would you prefer that it be based on ... who you know in the company? How much you can bullshit your way through a soft skills quiz? How much buddy-buddy rapport you can establish with your interviewer?
These are objective measures on a set of borderline "well known" problems, ... I can't imagine a simpler thing to prepare for. There is no guessing. The amount of hoping someone just "likes" you is at a bare minimum. The impact of resume fluffing is minimized.
I literally can't think of anything more fair or objective.
I can't even fathom people that aren't willing to make these miniscule one-time efforts where there are literally buckets of money waiting on the other side of the gate. Money that most non-tech people will never ever dream of obtaining.
I'll take all my downvotes now, but I'm willing to karmically die on this cross. :P