This thread was inspired by this one on 4chan's /g/ board btw
https://boards.4chan.org/g/thread/109034858
All the advanced technical stuff is there but if you want to help and have some CLI skill you can use this template help me make HQ Webp encodes from truly lossless PNGs (ie it's not a JPG saved as a PNG) in 1920x1080 res:
cwebp -preset photo -psnr 45 -pass 10 -m 6 -f 0 -sharp_yuv input.png -o output.webp
Optimal PSNR seems to be 40-45 but 45 is a pretty safe option.