It's not that they are not important, it's mostly that they are not central. I've lived, traveled, and have friends in different countries. Every country/city has it's own problems, but no country feels as "uncanny" as the US.
For example, racism exists in Mexico, but most people understand that their access to means is the biggest impediment in their lives, like being able to speak english, going to a good private high school or college, even stuff like having a car or your neighborhood's reputation has a large influence in your life and access to opportunities. There has been talk about classism and racism, which are trivially linked. But this rhetoric is primarily petit-bourg, and it is evident why, since it is pleading for equal superficial treatment of poorer people.
The other big issue related to idpol in Mexico is feminism, but that is frankly very much deserved. Women are treated like shit and they are frequent targets of murders. Even one of the most important communist orgs, the PCM, has been actively harboring rapists. It's fucking disgusting. Basically, feminism in Mexico is fine, because it is desperately needed. There's a lot of petit shit tied to the feminist movement of course, but count your blessings I guess, a lot of women are very misogynist, so feminism is a progressive force which is supported by communists.
This with slight modifications is true for other countries in LATAM. In Russia, idpol was basically non existent, except for the nazis who were met with resistance by anti-fascists and just random people who would beat them up.
My impression of Germany was that racism was important, mainly because of immigration, but nobody gave a shit about someone being LGBT for example, even when there were pride flags and other LGBT symbols. There aren't a lot of gay-centric businesses compared to the US because everything is just mixed in the amorphous club culture and nobody really gives a fuck about your sexual preference. The leftist scene had talks about anti-fascism, imperialism, and neoliberalism, nothing particularly cringe. I could say the same thing about Spain.
The US is just fucking nuts. Like if you're in NYC, you'll see people dressed up in hassidic jew clothing, orthodox priests walking around, crazy inbred nuns (I have no idea what that was to this day), people in suits with the tacky MAGA hats. People are just really really bizarre, self-righteous, and soooooo many of them are mentally unstable. One striking feature of the american psyche is the protagonism. It feels as if everyone thinks they are the main character of their own movie, and their lives have an elevated sense of importance for no reason. A lot of them victimize their existence in a tragic-heroic way because that is a way to cope for the bad shit going down in their lives. Of course not everyone, but jesus christ.