Miraculous as an allegory for entropyThe show can be philosophically interpreted as a metaphor for how people cope with the idea of death(/Destruction, as symbolized by Adrien). In the idealized sunscape that is Paris, reminders of Destruction (the fashion posters) are paradoxically everywhere yet unfamiliar to the children, who have not yet known loss personally. Their future roles as Miraculous vessels is also significant: the full pantheon of universal concepts is arrayed in that class, to which Destruction is new. Destruction is the newcomer, the stranger, the odd one out. It is no coincidence that Creation (as symbolized by Marinette) hated him at first sight. All the vessels see him as unusual (even Chloé, his friend, has a fundamentally different perspective than him), but Creation is especially alienated from him because he's so different to her. This antipathy is reflected by Gabriel, who only finds his son useful when he can be defanged and kept away from the world at large.
Of course, hate does not tell the whole story. Marinette later loves Adrien, although traces of her initial fear remain in this love: she rarely talks to him and tracks his movements like prey. Adrien surmises correctly that she- for all her attempts at friendliness- does not feel comfortable around him. He is still not part of the group that Creation made and supports. Only when he masks his unhappiness, acts like a native inhabitant of Creation's realm, is he someone she treats fairly.
This duality appropriately shows Marinette's conflict over her heroic duty. On the one hand, it is a highly honorable and pure calling; on the other, it will probably lead to her death. Doing it brings her closer and closer to Destruction, further away from the people and places she is familiar with. Ultimately, 'doing the right thing' where her realm is concerned means accepting things she never wanted to accept and diminishing herself by accepting Destruction as something not inherently bad. This is what Gabriel was unwilling to understand; there is such a thing as a 'good death', a Heroic Sacrifice preferred over a fearful life subservient to evil. Emilie and Nathalie understand Destruction's subjectivity, Gabriel does not.