I fail to see the similarities. Following a policy of appeasement is hardly the same thing as actively choosing not to debate somebody who quite obviously is never going to shift from his position and who even more obviously simply ignores anything thrown at him. In this case, TR isn't advising a school board or funding an eminent statesman for election. Personally I believe that placing a basic guide to evolutionary biology in the scriptorium, along with links to counter creationist arguments would be a much better idea than endless debate that lead to nowhere. I myself think that on the internet do not feed the troll/creationist is an excellent maxim. In my opinion, the only reason that would make sense to get into a debate with the likes of TR would be to avoid younger forum members getting the wrong idea - that creationism is a valid alternative.
Incidentally, I've rarely made posts related to the Total War franchise myself. I became active on the forums because I noticed that the standards of writing and debate here can be pretty good and to be able to contribute to the scriptorium in future.