[Created By] field of the entity is readonly being always equal to a user, who’s created the entity.
However, if you create a board and choose
[Created By] field as a board’s row, you’re then able to create cards in other users’ rows. As a result,
[Created By] for that entities would be set to them, not you, as if it were they who’ve created those entities.
Entities created by myself always have me as a
Created By field’s value.