Yes — that’s normal. The split prism and microprism collar are focus aids, not the actual focusing screen image you should expect to look “sharp” in the same way. Their job is to indicate focus: when the two halves of the split image line up, and the shimmer/dazzle in the surrounding collar settles into a solid image, your subject is in focus.

So don’t judge focus by whether the split prism itself looks pretty or crisp. Judge it by whether the geometry aligns correctly. The surrounding ground-glass screen should also agree, but with small or distant subjects it can be hard to see clearly in a viewfinder.

If photos on film come out sharp when you focus this way, the camera is working normally. Only if the recorded images are consistently out of focus despite correct split-prism alignment would you suspect a camera/viewfinder alignment problem.