To be fair, your notebook probably won’t get light like that, but pencils are pretty archival.
I saw another video about someone's favourite pen and he gave the reason as check fraud. Apparently the uniball 207 is pigment based ink and doesn't wash away in acetone.
I just searched then on youtube for acetone pen check fraud and it looks like there's a 13 year old video about it, and a million copycats. Either copycats are lazy, or the 207 is still $2 13 years later.