How feel you feel about SA and Pedo troupes in bl's?

I feel like when I read bl's it's common for one of the two leads to be SA or for the main couple to be between a child and adult. I think that some bl's can use these troupes in good ways that make for interesting character dynamics and storytelling, but that usually isn't the case. A lot of the time, they use these as a way to make the relationship between the two stronger, and then after the issue is solved, the trauma from the event magically disappears. I personally don't like when stories are written like this because it kind of ruins to plot or character, but I see it so often. Not to mention that when I go to the comments people seem to enjoy it a lot. I do enjoy angst but not in this way. Anyway, I wanted to hear your opinions, whether you disagree or not.