And I totally agree with your points.
Still...(and I'm not trying to pick any fight; Brian, it is your site and you should do as you see fit)
I see a lot of blades, mostly waki or tanto on ebay that are probably genuine but in a bad shape; I also see people coming on this board, showing an average blade in old plolish or worse and asking whether they should have it polished. Almost invariably, the answer is no, the blade isn't worth it and will cost more to restore tan the purchase price.
So, with that (perfectly sound) reasoning in mind, what will happen to these blades? They'll rust in an attic and get lost to time. Now, if I come and show a rusted Masamune, authentified, going the professional route is the compulsory way! But what about these low grade, mumei blades, Should they disappear or be preserved?
If an amateur polishes it and does a bad job of it, will it be more ruined than letting it rust to oblivion? It won't be good, but at least, maybe, one day, professional hands can save it.
I'm sure there isn't one easy answer to this, but i often wonder what is best and when I see Artur's work, I think that more good than harm was done in that perticular case.