Why would any of those early/mid-19th century “Brethren” writers imagine that Ezekiel’s prophecy of the millennial temple needed to be understood in mystical or symbolical terms? It’s the earth; an earthly kingdom; Israel; the nations; rule and government; worship...! And then, no temple but something else is a symbol of it, like the Church! I can imagine those men of yore, poring over the Scriptures, discussing, questioning, challenging, agreeing .... and I trust, led of the Spirit.
In his Believer’s Bible Commentary, William MacDonald gives quite an exhaustive account of the literal temple. He includes this extract from Paul Lee Tan’s, The Interpretation of Prophecy—“Non-literal interpreters maintain that this prophecy is a symbol of the Christian church. However, this major prophecy in the Book of Ezekiel contains descriptions, specifications, and measurements of the millennial Temple which are so exhaustive that one may actually make a sketch of it, just as one might of Solomon’s historic temple. In fact, E. Gardiner in Ellicott's Commentary on the Whole Bible succeeds in sketching the layout of the millennial Temple—all the while denying it is possible. This has prompted Alva J. McClain to comment that 'if an uninspired commentator can make some sense out of the architectural plan, doubtless the future builders working under divine guidance should have no trouble putting up the building.’”
Dr Tan did “read prophecy” at Dallas Seminary, so I suppose there’s a distinctive line back to Darby, Trotter, et al. But that doesn’t mean he didn’t consider different interpretations. Maybe we need a fresh look at the Temple. But often, like in the past, the new light that is sought may lead to the confusion, as it did, around topics like, “eternal life;” “eternal sonship;” “the righteousness of God;” and so forth. Nevertheless, we must never cease to search the Scriptures.