@cor3zone, well if you're going to play that way...
First, i will say that to me it sounds like you're lashing out because you yourself have somekind of personal problem in which people who are close to you always insensitively advised you to just "better yourself" or something along "it's all on your mind", hence why the conclusion of this arc is very offensive to you.
Second, read my comparisons more carefully, you don't need to be a psychologist to notice someone is like that nor be a mind-reader to know when somebody looks like they got a crush. Or are you that inept at reading people's expression that you need a psychologist's help to tell whether someone is happy or not? A mind-reading ability to tell when a someone has interest to somebody else?
Third, you're grossly misunderstanding the point of my comparison. I'm NOT saying that people who actually have depression only need to find things they enjoy and spent more time doing them nor that gay people is actually just bisexual. I'm saying that the MC of this manga, Leo, act exactly like my comparison. He keep saying things like "BECAUSE MY ABSOLUTE PROGRAMMING SAYS SO!" despite as discussed by the elf mage, he actually always capable to deny said programming and had instance when he already done so, like the fact alone that he can came up with a plan to bring disaster for humanity despite "do not bring harm to humanity" also one of the absolute programming he has. Scratch the psychologist or mind-reading, you need interpreter's help instead.
Fourth, you're reacting like it's impossible for someone to be enlightened and thus found a new resolve to face their inner mental/emotional problems simply after a wholesome and heart-warming talk with people they are close with.
Fifth, your accusation that this manga going forward is only going to be slice-of-life is only your deduction at best. Just read other comments here, some users brought up loose ends that could spews conflicts for the future chapters.
Sixth, judging by how you see my previous "counter-argument" as such instead of a kind warning that you need to eat snicker. It's clear you're the one who can't take argument.