Tankies arent organized whatsoever in the west

They very much are, pretty much any western state has an ML party with practically military discipline. They're cultists, of course they have strict organisational structures -- see "democratic" centralism.

On the other hand they're also deeply fractional -- much more so than the liberal and anti-ideological left which may have more overt disagreements but actually manages to work across those boundaries because they don't consider each other literal fascists, what keeps tankies together is their capacity to ignore fundamental disagreements within their wider in-group, like, random example, ignoring China's backwards stance on sexual minorities. Maybe a bit cartoonish but if you fly a red flag, are an authoritarian and know the right combination of selective quotes (always watch out for [...] in anything a tankie says) they will believe that you're on the same side. But precisely that "ignore everything but the shibboleths" kind of approach means that they don't get shit done: If they tried to they'd have to face their fundamental disagreements.

The other thing that keeps them from doing things in the real world is that they're too busy wanking off to their own perceived superiority. Lemmygrad is simply an online version of that kind of cult.

Tankies want to kill landlords

No. They want to be landlords. They want all the power capitalists have and centralise it, that is literally what state capitalism means.

but i can recognize that the Nazi threat is much more metastasised in America and a much greater threat.

That's true, big-picture. But within the left tankies and adjacent styles of thinking, things like purity checking culture, are very much a problem that keeps the American left from being effective, in general and of course as chemotherapy against fascism. You won't see them participating in Antifa, feed the homeless, or get social housing or public transport built.