Quoting Tarynosaurus Rex:" No, I was medically discharged a month into basic because of a pre-existing injury that was exacerbated ... [snip!] ... by the physical demands of basic. They made me go to physical therapy and I was kept in med hold for a while. It sucked."
Being a holdover sucks ass, and sucks way worse when it's in basic. When I was in AIT, just before taking the final, I got meningitis symptoms and was sent for a spinal tap. 4 hours after the spinal tap I took the final but passed out about 5 mins later in the hallway. The hole in the membrane holding CSF in wasn't healing, I had spinal headaches every time I sat up, ended up being hospitalized for a week. So I missed the final week in the field and had to be a holdover until another company reached it's final week in the field.
They treat holdovers like crap most of the time because most holdovers in AIT are double-taps; they fail the same academic test twice and are just waiting to be discharged or reassigned to a different MOS. Everyone has a low opinion of them and just assumes all holdovers are double-taps. I once got really mad at a drill sergeant that was messing with us one day and hollered out "I got straight As and passed the final but was at BAMC for a week, I didn't smurfing double-tap!" Then they were all cool to me after that LOL. And then I went to the next company to finish the last week.
But being a holdover is typically much worse in basic because you usually don't get all your stuff back and you're not allowed your civilian clothes or free time to go off base. Unless it changed since I was in.