I appreciate where the sentiment is coming from (and I’d personally be in favour of stronger COI norms than a lot of EA funders seem to have) but the impact cost of this seems too high as stated.
There’s value is being squeaky clean, but there’s also value in funding impactful projects, and I think having COI policies apply across the whole large org (“If anyone from our org is dating anyone from your org, we can’t fund you”) will end up costing way more value than it gains.
Obviously, when someone keeps making dummy accounts over and over again to circumvent forum moderation, they should be disabled immediately. (Also, you should stop doing that.)