Most of what Irenaeus got blamed for was concocted centuries after he died. The apostasy of Rome had not yet poked its pagan head up in Irenaeus’ time.
This particular piece is definitely not written by Irenaeus.
Bold assertion. How would you know this?
You figured that out all by yourself?
Actually, Ireneus DID write that supporting apostolic sucession, The Church, the bishop of Rome’s primacy and Holy Tradition. Only folks 1600 or 1800 years after the event seem to think they know better about what Ireneus did or did not write. Which is quite strange, but not so strange when you think that these editors also edit out the facts of the Didache that prove that The Early Church’s practises and believes are continued in orthodoxy, not in the evangelical sects or in the pent-e-coastals or baptists.