There's probably a sizable group of younger individuals, talking like 14-18 that are your kinda weird kids who don't have strong interpersonal social groups and instead compensate with the internet. The ones who find community in various instances are going to probably trend heavily left over time as they're exposed, inadvertently, to things they wouldn't normally be if they had more socionormative relationships.

No well adjusted 16 year old with a gaggle of friends is hanging out on sunday night in the summer on lemmy unless they have a very atypical social circle, autism, or both. And I don't say autism in a derogatory way.

I was that kid back in 2004-2005 who had no social friend group and found connection with people through 4chan when I was 14. The exact same type of people who were attracted to chans way back when are the type of people that are going to be attracted to lemmy and federation. The only difference is this time the chans are already cemented and those who fall into the alt-right pipeline already have their destination mapped out for them. Those that aren't sucked into the hateful rhetoric will likely find there way here as content seeps into the rest of the internet by osmosis.

Discord is extremely popular among well adjusted teen groups and social outcasts in equal order, it has strongly become "the third location" fpr a lot of people. Instead of hanging out at a skate park, or the mall, or in AIM chats, they're hanging out in VC on Discord.