Yoshi-P tells PC Gamer that he is "not shocked" by mixed DT reception

[Turtledeluxe]

Literally, all you quoted is Legacy. Legacy stands for the long-lasting impact of particular events, actions, etc. that took place in the past, or in a person’s life.
Learning about cultures and historical customs is the legacy left from previous generations to the newest ones, even more so as the newest ones are ignorant to those. The racism is a subproduct of a legacy. Parenthood, family, and what legacies they leave for their kids.
Living X Death and the legacy left by those who passed. They approached several facets of the theme legacy, it's literally stamped on everything and every single arc. Even Zoraal Ja's motivation of 'the young forgot the dread of war' is a product of a legacy of peace.

It is /everywhere/.

That's not how exploring themes works. This is like saying the game properly explored biology because all the characters can breathe. Just because something is from the past does not mean legacy was explored.

Lots of things are *everywhere*. Colors, the English language, water. Is the story saying anything about those things? No it is not. That is not how storytelling works. You do not simply write whatever and claim you properly explored the subject. To be clear, characters may reference legacy-- its not like it isn't mentioned at all, it's just lip service as originally said. Surface level. Whatever you want to call it. By your logic, all life is about legacy constabtly because every moment of every day things are drifting into the past and by thinking about it or writing about it you are inherently exploring legacy. Everything is a product of legacy because it happened due to some other event that preceeded it. That's redundant, as redundant as DT.

I also didn't say the story didn't have a theme. I said it's composed of many disjointed subplots that result in something less impactful than it normally would be.