it's not shorthand, то and это are two different demonstrative pronouns like that and this
the use of то in compound sentences is the only norm, it's irreplaceable by это even if you add direct object
Я хочу повторить тебе тот анекдот, что рассказывал вчера
NOT
Я хочу повторить тебе этот анекдот, что рассказывал вчера
occasionally you may hear people say so but it's incorrect and usually occurs in situations where they intend to end the statement at the comma, but then decide to add some clarification