This is already happening. Most companies are using AI screeners for hiring now. They reject qualified people all the time.
Having been through an hiring cycle recently and prior to AI, the entire process has been pretty broken for a long time, but AI is definitely breaking it (and a whole lot of other things) in new and novel ways.
The only reliable and high quality signal is a positive referral, but those are gated by your personal network, which may not be well developed.
Time for hidden prompt injections in cv?
Have you ever successfully appealed a failed HR screen?
IME the reality of the modern world that there's little genuine appeal or reconsideration anymore. There is some sort of process but it's Byzantine and if we're talking the government, expensive.
I guess everyone has had different lives but between humans and algorithms I take the algorithm every time.