Anti-jewish content was there 10 years ago as well. The board is full of white supremacist posts when I checked yesterday with lots of threads complaining about non-white races. There's absolutely no indication that it has been overtaken by developing countries.

Just because they changed their name to "groyper" doesn't mean they aren't alt-right anymore.

As for support for authoritarian regimes like russia, it is obvious that they are running propaganda on the website and want to sow division in the US by encouraging fringe groups like these.

On 4chan, Nick Fuentes is loudly and routinely criticized as a closeted homosexual who hates women and encourages his impressionable underage followers to also hate women. He's a more active part of the incel pipeline than 4chan these days and is called out for it on 4chan.

(He's also as a federal informant, since he was never thrown in the slammer for plainly inciting J6 activity. The feds had him dead to rights for that and just let him. I mention this not because it's relevant to the point, just for completeness.)

However, from what I can see /pol/ still serves as significant breeding ground where people deeply committed to their views can get together in a "mask-off" manner without fear of moderation, while they have to be more "mask-on" on platforms that are more dissemination-focused like Youtube.