not OP but it does seem like you're nitpicking details instead of engaging with what seems to be the intent of the response: AR/VR has come an incredible distance since DK1, the last 10 years have seen it go from a barely-discussed completely unavailable/fringe dev-kit-only technology to being an clearly viable spectrum of mass-market products.
edited: grammar. still feel like I've failed to produce readable english, but I'm giving up
For the image generation (or even indexing with the CLIP interrogator) side of things, recommend just installing the AUTOMATIC1111 github repo (https://github.com/AUTOMATIC1111/stable-diffusion-webui), it's a web ui with pretty much every variant of stable diffusion you could want to try out, like txt2img, img2img, inpainting (both textual inversion and dream booth), outpainting, style customization, clip interrogation, etc. Most importantly, there are about 1000 youtube tutorials on how to do each of these things with it, so you can pick your interest areas and just try it out without having to understand all the details first.
edited: grammar. still feel like I've failed to produce readable english, but I'm giving up