I don't think they updated it - it still looks a very simplistic combination of slightly high frequency noise + artificial horz scanlines.

I grew up in the era, and a couple of my buddies still keep a few CRTs for playing NES games so its immediately apparent to me. Similar to when laymen use AI to generate "pixel art" without doing any grid alignment or palette reduction.

Retroarch also has some decent approximations of CRT scanline using shaders as well (see crt-geom crt-lottes)

https://www.retroarch.com/?page=shaders

Nope, haven't changed it! I think it's an aesthetic preference thing.