That the Bible Students expected Armageddon to come in 1914 is no secret; it is written in the Proclaimers books, among other publications. The 'faithful' ones don't consider this a counter-evidence of divine guidance. They consider it as just a fact that showed how deeply and truly the Bible students were longing for Christ's coming.
The thing with him not reading any Bible verse is a bit curious, though. At least a few years ago when I was active, the orders were to read from the Bible directly, especially in a public talk. But, Bethelites tend to bend the rules for themselves.