I am a very liberal person and I have very liberal children, except for one. I'm pretty sure my Gen Z son has been taken in by fascist doctrine. What can I get him for Christmas?
A plane ticket. Others have suggested he's bored and I concur. IMO, he needs to be intellectually challenged while simultaneously having his fears assuaged. Fear, I believe, is a key driver in pushing people toward fascist ideologies. Most likely he fears not being loved.
Traveling to countries with very different cultures can be both stimulating and reassuring, especially if it involves some significant challenge - a physical one like climbing a significant peak or somewhere that's just super hard to get to. You can demonstrate that you love and care for him by going with him. Just the two of you.
Fear is a key driver (period). I just heard this on the radio. They analyzed what pulls people in and it's fear. Fear also keeps people lingering longer. I didn't hear enough to explain it (I got to my destination before the show was over). Putting it together with other things I've heard, the algorithms that are tuned to keep people engaged on the site skill natually choose things that stoke fear and that is probably the same thing that the facist propaganda is promoting, too.