Do the underlined parts have almost the same meaning, if not exactly the same?

We tend to blame the young. That is a problem we have.

We tend to blame the young, That is a problem of human nature/our nature.
There is not enough context to answer your question, Taka. The first seems as it stands to refer to a particular group of people.
If the context is about us human beings, especially us adults, then what do you think?
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Then they would have about the same meaning. It may be cultural rather than biological, however.
OK. Thanks, MM.