Is URP gonna be ditched?

[mgear]

they have improved those in coming versions,

Improvements to shader build time and runtime memory usage

Greetings from the Shaders team! We would like to share the news on some immediate improvements coming up, which aim to resolve the current pain points of shader compilation time and memory usage. We also wish to share some best practices regarding shader variant stripping, which you may find useful. Conditional shader features allow artists and developers to easily control the shader’s functionality at authoring or runtime. Static branching and shader variant compilation is traditionally used…

and can have urp+hdrp in same projects eventually… (mentioned in Unite2022)
so urp not going away.