Seems pretty serious if they kicked him out.
Lay low for a year, work on some start-up-ish looking project, then use his middle name to get hired at one of the many AI startups? (only half joking)...
They may have thought they could jump into an industry job, including the paper and all of its good press coverage on their resume. Only the author can retract an arXiv paper, not their academic institution. It wouldn't be hard to come up with a story that they decided to leave the academic world and go into industry early.
MIT coming out and calling for the paper's retraction certainly hampers that plan. They could leave it up and hope that some future employer is so enamored with their resume that nobody does a Google search about it, but eventually one of their coworkers is going to notice.
He probably will never be someone of significance, but he also will probably be able to have a standard middle class life.
That high-level Apple employee was probably a manager and oversaw hiring people.
I would tell myself every day, "I wouldn't hire me."
It's not self-defeating.
It's not being a victim.
I wouldn't let it stop me from trying.
It's being accurate about what kind of company you'd want to build yourself, and the internal state of a lot of hiring managers. And with a true model of the world you can make better decisions.