This is a bit nonsensical really...

I mean, you could as well say that all Bitcoin transactions are text, if you consider each 7 bits of data as an ASCII character, or more if you use UTF-8 or other encoding... you would end up with random sequences of letters, forming a unique "text" per transaction.

The "art" that is being generated here in OP is simply interpreting the original data in a different way, as a color, which usually just give you random data. As an image, it's just randomly colored dots.

I thought they had found some interesting visual pattern or something, but there's no structure, it's just random noise, as expected.

Also, mentioning JPEGs when referring to an image in this context is just wrong as JPEG is a lossy image format, which means that the original information is lost when generating the JPEG file. At least mention a lossless format like PNG which preserves the original data.