Refutation of Candida Moss's argument that "suffered unto death" in 1 Clement is not a reference to martyrdom, using Polycarp's parallel usage

Candida Moss (described as having written a book arguing Christians had a persecution complex) or similar critics argue the phrase "suffered unto death" in 1 Clement is not necessarily a martyrdom reference. Mike counters: Polycarp, a colleague and friend of Clement, uses the same phrase just a few years later in Polycarp's Letter to the Philippians 1:2 explicitly to refer to being killed (the death of James). This is parallel usage within the same literary/theological community establishing the phrase as a martyrdom reference.