No one. This is a political forum, the purpose of which, as an oversimplification, is to argue with strangers on the internet. If you feel the need to ignore people you probably don't belong here .
and that's still super easy to do, even with a long ignore list. Most (all?) of the long ignore lists posted are just filled with banned posters. That's not a bad thing, that just means the poster that ignored them saw how horrible they were before the mods did, and that's fine...it would be weird if it was the other way. I've been a forum whore for a long long time and this is the first message board I've ignored people on and it took me a few years to get started, but once I did....oh it helped SOOO much. On the rare occasion one of these clowns, bigots or boring hacks says something worth reading, it will get quoted.
We're not missing anything.