I believe part of replacement theory includes all minorities or at least it includes a disdain for all minorities.
Good guess but not really....
Are you even aware who came up with it?
A gay French postmodern socialist. A man as about as far left as one gets. It's a far more elaborate argument steeped in postmodern sophistry than I'm going to go into....and it was aimed at the Muslim community entering France.
Why would a gay postmodern French socialist turn hostile to Muslims? Pretty simple really....because Islam is openly hostile to gay people. This isn't controversial, it's a fact. They aren't chucking gay men off rooftops in Muslim countries because they're really open minded.
Is he wrong here? Or not?
Can one justify their hatred by the hatred they perceive as a threat to themselves?
If we're going to talk about replacement theory....fine, let's talk about it. But keep in mind, it's got little to do with the ideological leanings of the shooter. He is an eco-fascist. He believes in a very left wing ideal of technological primitivism, sustainability, and the importance of social community over individualism. The only path he sees to this socialist utopia....is a very right wing nationalistic ethnic cleansing of "inferior races". In short he's a left wing white nationalist.
I can't stress enough how easy it was to see this coming. I've been saying on here for years, the idea of shaming white people into some complicit group identity that only exists to serve the needs of others is a bad idea. It doesn't have any staying power. Nobody really feels ashamed of what someone did long ago, just because they have the same skin color. Nobody, including those claiming to support the idea, wants to give up wealth or opportunities because of their skin color. They either imagine it's someone else giving those things up....or they're just saying it to be politically fashionable. At some point, the inevitable backlash of reasserting a proud white identity will happen...and I'd rather it didn't.
As for Tucker Carlson, I don't think he has a 4chan account and it's hard to blame him for saying what the left has been saying for 2 decades now.