You could certainly integrate a shader into a monitor using a sufficiently powerful GPU or equivalent. But looking at https://i0.wp.com/wackoid.com/wp-content/uploads/2021/08/CRT... for example, you'd need at least 10 times the original resolution, which for NTSC would translate to roughly the same vertical resolution as an 8K display, if not more.

The curved glass wouldn't be necessary, nor very desirable, IMO. Trinitron TVs were approximatly flat and great for CRT gaming.