Sculley did say development and qualification of these systems takes a while, you can look it up..Raptor Helmet Mounted Display & Cueing System (RHMDCS)

the F-22 is an odd bird, it's canopy is very narrow at the top so the HMD has to have smallest possible form factor so it cannot look like this:

https://www.fbo.gov/index?s=opportunity&mode=form&id=eafd057a36c737c93ca5440b7ba94ac9&tab=core&_cview=0