Can someone tell me why people who are our enemies (as indicated by their posts and proposing of half measures or explaining away the behavior of jews) are
tolerated here?

A few to mention are Rasen, Miguel Dias, and George Witzgall.

I just want to ask why these obvious plants are here. I would suppose since they are on the side of our enemies, this makes them enemies.

Same old shit comes out of their mouth 'Well, it's not all jews....'

Yes it fucking is. If they are not forwardly anti-white they are either helping their brethren, destabilizing white society, trying to mind fuck us (as in the case of fake conservative jews), or adherents of liberalism and hedonism. In one way or another they are set against us.