I have no need or desire to post a rebuttal, because as you have shown elsewhere, even when proven wrong, you will continue to argue ad nauseum. I bet if Ralph Koster and Richard Garriott came in here and said something contrary to what you believe, you would say they were wrong as well.
I have my experience, conversations with GMs and devs, and my memories which say something different to what you are. And that's fine. I have no need to prove anything to you. Because, in the end, it doesn't really matter. You aren't going to convince me of anything and I am not going to sway you. I know what I have seen and experienced. Yours is different. Case closed.
"Even when proven wrong"? Hasn't happened yet, and against the likes of you, never. You still can't explain why, if macroing was so illegal, so many players openly macroed anatomy and eval on town criers --- and the fix wasn't to remind players of any rules, but to make the skills unusable on town criers. Blue PKs macroing off counts in town. Red ghosts macroing off counts. Unattended macroing was even referenced in UO comics. You have
nothing to say about these, instead falling back on some faulty memory that I suspect comes from an anti-macroing bias.
I didn't need to have conversations with GMs, in contrast to your fiction. Macroing was so openly discussed on Stratics and Crossroads of Britannia, with not a peep about illegality, to the extent that people asked what the best macro program was. It was actually so known to the Devs that when they discussed it often, it wasn't about declaring it illegal, but to make regular play give good enough gains that players wouldn't do it unattended. They missed the point, however, with macroing off murder counts and selling things to NPCs.
Your argument of a "positive legality" has no logic at all. Show me where in the rules that hitting a monster with a sword is said to be legal. Show me where the old para/exp combo was legal. On the other hand, old house break-in exploits were clearly illegal, per the ToS, no matter what some early GMs did to dismiss them. (Imagine that, and you cited a GM's action as proof something was illegal.) Third-party programs were clearly illegal, per the ToS.
If you want to keep ignoring simple facts, I will simply keep copying and pasting.