The terms for this seem kind of not great tbh, unless you have been there for like multiple decades, especially in this job market.
I probably wouldn't take this and instead devote more of my time to practicing for and collecting interviews during the equivalent time period with the hopes of keeping my job at the end.
You underestimate how many old-timers are there at MSFT. I don’t imply any negative connotations to that.
But these are the most lucratively paid employees. These are also the same folks that are used to working at the same company and who might find it trying to interview elsewhere.