Chareidi just means anyone who is Frum but not Mizrachi/Dati Leumi, so it can’t be considered a new movement. In order to be Chareidi, you don’t have to believe in anything different than what Yidden believed in 100 or 200 years ago. On the other hand, being Mizrachi/Dati Leumi is a new movement since it didn’t used to exist. I’m not saying that is necessarily a proof that they are wrong; Chassidus was also a new movement. But being Chareidi is not a new movement since anyone who is not Mizrachi (but is Frum) is Chareidi by default.
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