Read the earliest of Mormon materials and you will be shocked by how differently they viewed themselves from how we now view ourselves. They were building a separate People. They invited all to come and partake of the covenant, renounce their prior errors, and return to living as one of God's New and Everlasting Covenant holders.
These dynamics are worth very careful thought. There is an actual consensus among church leaders that this is the right way to proceed. A discussion about it among Latter-day Saints has not even begun at the rank and file level. The transition takes place over decades, and unless someone first creates a vocabulary for the problem, we don't even have the capacity to discuss or notice what is happening and why.
This post has gone on too long. Not really a blog post subject. It's a book-length subject. I make fleeting comments about something that would take pages to develop. But I doubt I'll write the needed book. Instead I will try to bring the idea into the consciousness of you good people and let it percolate about. Surely some of you can do something about it.