と言(い)うものだSpeaker's impression, Criticism or conclusion

というものだ is a fairly strong expression in Japanese that indicates that the speaker has the impression that (A) is the way it is, based on their objective judgment. This is usually translated as 'my impression of (A) is that'. However, the more literal translation is closer to '(A) is just a thing that'. This emphasizes that the speaker has high certainty that what they are saying (based on their experience) is the true nature of (A) in most cases.

というものだ is constructed of という, the noun 物(もの) 'thing', and だ. It will be seen at the end of phrases that the speaker or writer is making a judgment about.

As this grammar pattern is quite direct, it is often used when criticizing something. However, this is not always the case, so will need to be judged based on context.

Caution

In casual conversation, という may be shortened simply to って, without any change in meaning.