Can confirm as well, was laid off from Microsoft in 2023, and I kept access for about a week and a half (and then was paid for an additional 60 days after that, but no longer had access to anything, this was just the WARN period).
Same thing for people just leaving. I left in 2024, and my login and everything around it kept working until my announced leave date (and I gave more than a month notice).
I do recall stories of people getting escorted out, but this was from 00s.
Are you sure about that? Microsoft's 2014 layoffs, which were large enough to be reported in the tech press, let employees keep network and building access until the actual layoff date.