What's an "acceptable" level of stuck pixels?

I saw some stuck pixels on photos from my mirrorless. Sent the body in to Canon for maintenance which includes remapping of stuck/dead pixels. Obviously, at (manual mode, lens cap on, RAW) f/8, ISO 100, 1/100 shutter, no stuck pixel is visible at all. But at ISO 400, 1/10 shutter, and with the exposure slider pushed +5 stops in Camera Raw, it looks like the stary night sky. I know that's a little extreme. But what is a reasonable level of "amplification", so to speak, at which an acceptable amount of stuck pixel becomes visible? Of courses, I've already done the in-camera dust data delete. I know I know - Photoshop filter, right? I prefer staying in Raw if I can help it. I want the stuff coming out of the camera to be clean, if possible.