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というものだ

that's what ... is

→ と
phrase Uncommon #17,992
that's what ... is Used to characterize or define something, often by stating what it should properly be called.
JA: 人を助けるのが本当の親切というものだ。
EN: Helping others is what true kindness is.

魚の代金を受け取って、私の法務読師に送金したというものだ。

The claim is that they received payment for the fish and transferred it to my legal adviser.

悪いがそれは高慢というものだ

I'm afraid that's arrogance.

— ８ 1／2 (1963)

あなたが彼に援助を求めても、無駄というものだ。

There's no point in asking him for help.

それが“責任”というものだ

That’s what “responsibility” means.

— マルコムＸ (1992)