In my experience, the one place where educational signaling affects outcomes in tech is the visa application process for immigrants. As in, can you get a visa at all, and how easy it is to cross the border (both to start work, as well as to go home to see family for the holidays).

I wouldn't expect Triplebyte to be able to observe this, because it only works with candidates who are US citizens, permanent residents, residents of Canada, Mexico, Singapore, Chile, Australia, or, have an existing H-1B visa (per the Candidate FAQ: https://triplebyte.com/candidate_faq).