Years back, I had someone interviewing in person for a low-level, bit-twiddling, C++ role without knowing what hexadecimal is (no clue how they got that far; the external recruiter was given "feedback"). Pretty much lied about everything, tried to bullshit his way through questions. I have no idea how they thought they'd manage the job.

Just like with semi-personalized phishing/spam, it's not that these things didn't happen already, it's that people are empowered and emboldened to cheat by it becoming easier. The difference is in quantitative not qualitative.