The Princess of Convenient Plot Devices has a surprising amount of conflict, easy to understand world building. There's a lot of BL scenes (note here that I said "BL scenes" and not "BL") and as a fellow sapien, I'm glad the homies get to kiss and hold hands in this fantasy world. The manga is self aware but not in a obnoxious fourth wall breaking way. It can be read and enjoyed even if you have no idea about how BLs are like.
Background art could look better. Additionally, for a manga that is so open about the men loving each other, the main cast seems to be a little too straight. I was also not very comfortable with how androgynous men (not sure what the right term is) had internalized their place in this world. Perhaps it is social commentary on how women are treated in real life and how that could be affecting the way we view LGTV people. Subtlety is not this manga's strong suit though so I'm probably just overthinking it. There is no overt dehumanization and the manga can be tender and intimate when it want to be so.
Strongly recommend this one for people looking for another slightly absurd mystery comedy fantasy otome isekai to binge on as long as you do not mind the BL. If you are here for that last bit, there's not much of it but the story manages to successfully blend the premise into the plot itself so do give this manga a chance to make you smile.