In some cases, be nice with someone makes them to maintain epistemic states their future self probably not want to be in. In this case, every time you shut up about a err or wrong belief, you lose.

Note that I said "Provided we think they are pursuing their aligned goals effectively, we should be excited about this." I did not see any complaints that they are not pursuing their goals effectively, or that they are in a bad epistemic state.

If part of LWers downvoted Todd post, is for some reason.

Yes, and I have argued that the one articulated reason is not a good one.