The biggest flaw of a Transmigrator is that they are prejudiced, ignorant, and careless.
Thinking the world is a mere book, the others are just Paper Men, and thinking they understand the Protagonist best.
I just read a novel about how a Transmigrator who attempted to hug the Protagonist's thigh and try to be kind to that supposed miserable Protagonist, actually failed and still got killed by the protagonist in the end.
Because that Transmigrator has the flaw of Transmigrators. Knowingly ignorant, naive, and prejudiced.
After living for 300 years, his perception was constrained by the "book" he read in his past life.
Naively thinking, the protagonist was blackened because he was bullied. Using the logic that, if I help the protagonist and didn't bully him, the protagonist won't hate me or kill me. If he didn't face any misery the protagonist will become a sweet good boy.
Despite the reminder of his friends (the characters in the book) that the protagonist has a fragile temperament, and can be easily swayed to extreme feelings, the transmigrator disregards them all. Because the book he once read said that the protagonist is a good boy in his youth and will only be blackened after getting bullied. The transmigrator has his logic and thinking limited by the so-called "God-POV" of the book in the past life.
But the way most Transmigrators always think toward a bullied Protagonist that;
"If I save him and give him kindness then he will no longer be blackened and must be happy"
is actually no different than a parent who said;
"I give you lots of money, I give you delicious food, I send you to a good school, so you should be a good boy, right? You must be a successful person, right?"
They both are disregarding the fact that a human has emotion. And that the heart of a human, their psychological thinking are all different. Perhaps a person who has a good intention to help someone, might get his help seen as looking down on that person instead. The human heart is fickle. Human nature is unpredictable.
Unbeknownst to them, most Transmigrators are Selfishly imposing their own logic on the protagonist. Demanding them to be someone that "they thought they are". Completely disregarding that those Protagonists are real humans. With their own emotion. With their own thought. With their own logic. They aren't bound by the so-called "PLOT" in a book.
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The most aggravating thing about Transmigrators was they thought protagonists are invincible. Completely believing that "The protagonists won't die anyway, so it's fine."
But just because they won't die, could they be recklessly brought anywhere, with real danger hanging upon their head, and then leave them on their own mercy, thinking "he won't die anyway".
Yes, they won't die. But do Transmigrators forget that those Protagonists are living beings with their own emotions and feeling? Didn't they care about what those protagonists would feel? Didn't they care about the psychological impact toward those protagonists?
This is why the flaws of Transmigrators are, prejudiced, ignorant, and careless.
Constrained and limited by the so-called "PLOT". They judged the characters in the book as ignorant of their fate since they know the world from God's POV. But in reality, it is them whose eyes are blinded by a veil, unable to see and perceive reality clearly.
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So when I read a book where a Transmigrator who tried his best to hug the protagonist's thigh or be nice to him, actually still got killed in the end,
At first, I was angry with the ungrateful protagonist.
But after reading more of it, I realize, that Transmigrator deserve it!
After reading a world about A transmigrator and A protagonist with a different point of view, I realize that most Transmigrators have the same problem and flaws as I mentioned above.
It's fine if the protagonist is indeed goody two shoes- boys, or able to fall in love with those Transmigrators,
But in case the protagonist is not a Saint, and won't fall in love,
the ending of those Transmigrators perhaps would be no good. Because they are, unknowingly, arrogant. Naive, and ignorant of reality. Selfishly imposing their "limited" logic based on the "PLOT" they know to the people of the world.