Just because the offer is made to 25% of the workforce doesn’t mean they will all accept. These are generally very well paid jobs and the prospect of entering the job market right now isn’t going to appeal to everyone. Especially not when you have upcoming RSU vests after a recent 50% stock rally. If say a third of the employees accept then it’ll be an ~8% reduction, which is in line with a regular company-wide layoff.
There is a difference this time though. There has never been a time in last 40 years where being laid off seemed terrifying for knowledge workers in tech. It's speculative what's ahead, but man, does it LOOK bleak. Many would still come out OK, but it's not a given.