Tiberius Decimus Maximus said:
Well please, elaborate. Where do you get your designs from, if not your imagination?
What you implied, rather bluntly if I may say so, was that we're hypocrites. That we look down on plate armour while pulling designs out of our asses that are just as plausible as plate is.
It takes a great deal of ignorance to come to such a conclusion. I guess you're not a huge LOTR fan, maybe you don't care about the books and you liked the movies. You might see us as tight assed purists blinded by the delusion of their own importance and uniqueness.
What are the facts?
1) nowhere does Tolkien mention plate armour (not plate mail as you call it. Educate yourself! Mail = maille = armour made of interlocking rings). He mentions a vambrace once. Plate theory supporters use that very often as a proof, because in hisotry vambraces were often parts of a more complex system of arm armour. But many examples of mail and other kinds of armour combined with vambraces can be found as well.
2) elves and dwarves - the most developed cultures in MiddleEarth use mail. Exclusively. It's almost strange that very few other kinds of amour are mentioned, but it is so. There are some mentions of fish-like scale armours for elves, Haradrim wear corselets of overlapping brazen plates. Which is often misinterpreted as plate armour, but it's quite obvious from the description that it's some kind of lamellar. If someone invented plate, these cultures would've used it. Gondorian elite troops are described wearing mail. Again, if plate existed, they would've worn it.
3) we don't deny having some bits of artistic licence. We try not to go directly against canon, but in a few places where we're given NO information at all we use our imagination. But it's nothing groundbreaking and clearly AGAINST canon as plate armour is. You can hardly blame TLD armour for being just as "made up" as plate would be.
My designs do come from my imagination, but they do not collide with the lore and in fact are inspired by what little information we have on these cultures.
And you made me explain this AGAIN. I hate you for that.