which is why I think the tagged route would be the best start.
I think we’d need to do that anyway as a stop-gap measure because you could start that right now. If there’s a will for it, a wiki could be thrown together quickly but there’d need to be testing and the developers of Lemmy would want to be assured it won’t break anything or leave a security vulnerability.
If correctly formatted, the content could then just be scooped up and used to populate a wiki when it arrives.
Other problems I see happening
A lot of those are federation issues in general - for example, the wiki would be clearly part of another instances community, so a post about Biden being a lizard in a humansuit and a wiki entry on the same topic would be essentially the same.