The world view of Musar is really radical and simple. That good traits [note 1] are what really matters.
[Not that everyone that learns Musar is a decent person. I think my own parents were about the best thing I ever saw in terms of personal traits. We attended Temple Israel [Reform] so we were not really into learning Musar. But the fact is my parents knew well that Torah is about good traits. I assume they got that from their parents.
But there is the "spirit of Torah" that I found in NY Litvak yeshivas that I did not feel as a part of Reform Judaism That being said Reform Jews are in general a lot better when it comes to the aspect of Torah that relate to obligations "between man and his fellow man."
And sometimes Musar can provide some ideological excuse. Although Musar is important, the proof is in the pudding --good traits are what matters, not the learning about good traits.
I also went to the Boy Scouts, and there also was an emphasis on traits and self improvement.
At any rate, the message about good traits and fear of God I saw in Musar so much that at some point I got the message that: that is what "it's all about." That is, one's portion in the next world, and also in this world. Further, that holding on to good traits tends to create a force field around one-imperfect but still a kind of protection.
You might not think of Dante as an authority about Gehinom [Hell],-- but his opinion is also that the people in Hell did not have good traits.
[note 1] This is called "midot tovot". Not to lie, or steal. There are more details but that is the basic idea. Musar goes into the details, not just in the mediaeval books, but also the Musar books that were written by the disciples of Reb Israel Salanter. The books of Reb Israel helped me to get a clear idea of what Torah is all about even more than the classical books of Musar.