Yeah, but why should they be programmed to automatically not allow OB in that time frame when they would have no initial clue what my intentions are? Maybe I want to send an arch to create a landmark to their benefit? Why would they decline that possibility or any of my assets in trade (if we're on relatively good terms diplomatically), when I could simply be wanting passage for a neighboring war or any other reason that excludes digging their land? They don't know I'm a thief (yet)... If they deny me their OB after I've already had access to their lands and took advantage of it to dig up sites, then I understand them not providing further entrance.
It sucks pouring significant hammers into arch play, something that's promoted as a crucially incentivized aspect of winning a CV, yet its potential can never be maximized because the AI unknowingly nullifies it en masse once you start excelling with influence. It takes away some fun, and I just don't agree with how it's always functioned. If the AI needs to be programmed to slow my CV chances by refusing my OB so I don't get more tourism bonus%, then of course I've no issue with that, but the current implementation of this has the side effect of stunting arch play, which I believe needs adjustment in order to bring out the best experience possible. VP is too good to let something like this slide, as these are the kinds of smaller things that need refinement when the community talks of "going for gold".
I rest my case, and hopefully others will come to understand the reason for my dispute.