It’d be great if these were CC0, but unfortunately, the restrictions prohibit that.
Viewing post in FilmCow Royalty Free Sound Effects Library comments
Yeah, it's really sad when non professionals create their own crayon licenses. Obviously hate group people are scumbags etc, but these terms make it a non-free license that can't be safely used as per https://opensource.org/osd
5. No Discrimination Against Persons or Groups
The license must not discriminate against any person or group of persons.
6. No Discrimination Against Fields of Endeavor
The license must not restrict anyone from making use of the program in a specific field of endeavor. For example, it may not restrict the program from being used in a business, or from being used for genetic research.