Being a leftist is basically just being cursed with Cassandra's Tears

The curse of the leftist is to be right too early to be taken seriously.

...

has been a white supremacist settler-colonial project since the moment white people landed on this continent. It's been literally hundreds of years. Am I allowed to be right yet? How much longer I gotta wait?

As long as the analysis is happening, which it definitely is on the broad liberal and soc dem radar

What analysis? Liberals and social democrats have still refused to reject capitalism and the settler-colonial project. They only care right now because it's not their President doing the oppression, and the President is not attempting to hide his vileness from liberals like prior administrations. Liberals were silent at best or even on board with the violence during the Obama years and Biden's term.

And when individual liberals do take the plunge and undo their capitalist conditioning ... they cease being liberals in my eyes, and they cease being comrades in the eyes of their former comrades. I.e., they wouldn't be liberals if they did the analysis. They would be something else.

If you focus on the delay of justice as being as worthy of scorn as the long term injustice itself then you'll be an ineffective messenger when people are finally ready to listen.

Yes, which is why I am showing scorn for the injustice itself — white supremacy, capitalism, and settler-colonialism, all conveniently wrapped in a star-spangled rag — which liberalism systematically refuses to do, and which liberalism refuses to see is still ongoing. It's not "justice delayed", it's "they don't even plan to do justice".