That page also claims that "picnic" has a racist origin based on lynching, despite being derived from a French word from the 1690s:

https://www.etymonline.com/word/picnic

Their entries on "long time no see" and "no can do" seem pretty spurious as well, which undermines the whole page's validity. It's a shame TBH, those are really strange unforced errors to have included.