Well good, let's take the Spartans for instance. Plutarch alone is certainly far from enough in learning about them: you'd also need to read Xenophon's Spartan Constitution, Herodotus, Thucydides of course, history of Diodorus and Hellenica of Xenophon, things like the the biography of Epaminondas from Nepos, with conjunction with Aristophanes' plays, and even the Politics of Aristotle and chapters from Polybius. By a knowledge of these works you can fairly say you have acquired as accurate an image of Spartans as can be gotten.
I think you're mischaracterizing my views as using history merely to tint my pet peeves in rosey colors, whereas I recommend all of these works for a full and true account of the Spartan people and their institutions. Some writings are partisan, some aren't, some are favorable (properly so), some aren't (properly so). By a knowledge of all of these works, you can say you know what the Spartans were like, to the best of anyone's knowledge. Now tell me, what can modern works possibly add to that, especially since they are completely lacking in that inimitable style that someone like Xenophon writes in, that make history come alive? Western history books used to be useful because they pulled all the threads together from these disparate works, and used their own impressive style and weighty judgment to teach the reader and make the job of learning about Spartans easier. Modern books (past 30-40 years), by contrast, are completely lacking both in style and in substance.
As for ignorance of Spartan institutions, I think you underestimate the knowledge during the Renaissance, and highly overestimate that knowledge today. Again, you assume that all people before the 19th century all had their rose-tinted glasses and were generally ignorant of true history, whereas the reverse is actually true -- I have found that they read all of the works I mentioned above, and going so far as frequently to read them in original. The ignorant uneducated people could tell you who an ephor was. Today, with all of our high-faluting pretensions, nobody knows anything about the Spartans, except a cloistered stuffy group of intellectual academics. By your own admission you say that the general populace is entirely ignorant of anything remotely approaching accurate knowledge of Spartan institutions and history, whereas I have read actual accounts from Renaissance men discussing Spartan ideas in full accuracy and vigor.
That, in a nutshell, would be my response to the rest of the points you raise as well. Paul Cartledge is one of those books that is actually quite decent compared with many of its contemporaries. But even it, though it's not offensive, is nowhere near as good as Plutarch's accounts which show the positive aspect to Sparta, and the accounts of Epaminondas and Pelopidas which show the bad. So although Cartledge is respectable, I would frankly much rather read Life of Pelopidas, and the Spartan Constitution. Etc. There are good books out there, but they are rare beyond imagining, and most modern books on Classics are extremely noxious in both their content and intent. The few books that are respectable, often tread on repeated ground, and their sole merit lies in merely publishing the same old stuff for the new generation, in a glossy cover. And it is the few books among these, that provide actual new and original work which extends our understanding of the ancient world and is accessible by the general reader. And for that they deserve all our commendations. But my point is that the profession of Classics has experienced a collapse beyond recokoning in the last couple of decades, and so I believe my point still stands that contemporary Classics professionals, as a group on the whole, provide mainly nothing more than further collapse of their own profession.
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