I don't think the proposition (for employers) is really to be able to skip interviews altogether, but to find "diamonds in the rough", candidates who may have an exceptional grasp of material that might not be suggested by their resume or years of experience or whatever.
If you can hire someone skilled, but who other companies might overlook, that's a huge benefit to your team.
Triplebyte is really just the first screen, and the importance each company wants to put on the signal is up to them.