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context (a guy talking to himself while someone else is listening):

> 銀行が住宅ローンの営業に熱心な理由ってわかります？  
>  憧れの持ち家を手に入れた大切なお客さんの喜ぶ笑顔が見たいから…？  
>  そんなわけねーです！  
>  どんだけお人好しなんですかって話ですよね。儲かるからに決まってます

This usage seems to have similarities to ってこと. My intuition would be that it
basically sums up what he's saying as the question that って is quoting with the
implication that anyone who believes the second line is a お人好し.
CC BY-SA 4.0
2014-12-28T22:04:28.417
21064
2022-01-21T06:26:10.700
2022-01-21T06:18:17.990
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question
meaning particle-って
Meaning of どんだけお人好しなんですかって話ですよね
It looks like you have got the gist of the phrase.

> 「どんだけ～～って話{はなし}ですよね / だよね / だよな, etc.。」

has been a very common informal/colloquial phrase expressing one's surprise at
something one has seen, heard, etc.

The dictionary form of 「どんだけ」 is, of course, 「どれだけ ("how", "how much", etc.)」,
which is used in exclamations.

**The 「って」 is quotative**. Important thing is to **not** translate the 「話」
part literally into "story" in your head. 「話」 here means more like 「こと」 and it
only emphasizes what you want to say.

> 「どんだけお[人好]{ひとよ}しなんですかって話ですよね。」 =
>
> 「『どんだけお人好しなんですか？』って話ですよね。」 =
>
> "How credulous could one get?", I'd say, wouldn't you?

Who is being talked about? It is those who believe that banks are eager to
issue housing loans because they truly love to see the happy smiles on their
customers' faces for finally acquiring their dream homes.
CC BY-SA 4.0
2014-12-29T00:33:20.060
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2022-01-21T06:26:10.700
2022-01-21T06:26:10.700
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answer