IIRC F-16 computers are still programmed to limit maneuvers to 9G to keep the pilots from blacking out due to GLOC (G-induced Loss Of Consciousness). A transient 21G load from the escape system firing is survivable.
The 21G I was pretty sure of. On one of the N.Y. Limo Crash Threads I actually did some calculations to give People some reference info because they were questioning all the deaths so I gave so basic info on Race Car crashes and survival vs the Limo. It took Me about an hour to do it but I had the 1.5 year old Grandson crawling all over Me wanting the phone to look at "DOGGIE! PICS" because it's more fun to pester Me that PLAY WITH THE REAL "DOGGIE!