I’m aware that some states have different rules for how delegates are selected. And I am still saying it is not ok for the state party or the national party to select delegates FOR a candidate. The delegates won by a candidate should be people who are actually supporters of that candidate. The delegates do more than pick the nominee. They vote on the party platform, for example. The delegates at the national convention should reflect the voters who voted in the party primary. Otherwise, the RNC is just wasting our time.
But the procedures for selecting delegates have been around for a lot longer than this election cycle. Whether you agree with them or not, the candidates should at least be aware of them, and know how to work them to their best advantage. Why do you think the Cruz campaign still has active organizations in the states that have already voted? To work to get his supporters selected as delegates, even if they are delegates committed to other candidates on the first ballot.