I find the notation abrasive. By indicating a capture with a picture of a pawn, this is a cute alternative, but it is completely different than standard chess notation, which focuses on the place the pawn comes from rather than its identity as a pawn. So you have e x f4 or something like that.

This is kind of a return to English Descriptive Notation, which proceeded Algebraic, which is universally accepted now.

It is not easier to understand (picture of a pawn) takes f4 than e x f4. In the former case, you have to understand that the pawn picture represents a pawn AND to understand f4 you have to know the algebraic way of referring to files such as the f-file.

For e x f4 all you have to know is the algebraic notation, not both algebraic and picture notation.