There is nothing more dismal than going through an application process when they've already decided not to hire you. I've seen managers do this, and I've been interviewed and realized partway through they've already decided who they're actually going to hire (and it's not me).

I like the idea of being able to do interview calls at 8pm, but I'm scared they will just spam these to everyone and I'll spend countless evenings "interviewing" for jobs I'll never get instead of meeting with people I care about.

This is 100% going to happen unless governments start mandating something like mandatory tax / monetary compensation to applicants for participating in AI-led interviews.

If you're profit seeking company with no regard to the negative social externalities of your actions, why not just send out AI interviews to everyone the way some tech companies send leetcodes to everyone today? They could even build some feature to make the AI interviewer try to extract as much market information and good ideas out of you as possible and feed that data into their internal AI product ideation engine. You have to pay ball or else you don't get the job. (Btw if you pass the interview you have a 0.1% chance of being hired)