After reading all pages of that thread, I can safely say I
will continue using Zeiss cleaning products on my scopes. That entire thread was laughable, especially by the time the OP claimed he had a lawyer retained to go after Zeiss. Yeah, sure.
When I get a new-to-me 2nd hand scope, I do a Roland - acetone and Kimwipes. Then I use my homebrew distilled water-ethanol-dash of Morning Fresh (
) for any maintenence (ONCE so far).
The Intes Mak I recently restored was absolutely filthy on the corrector when I got it - BLACK filthy. Ask Flash what it's like now