Okay my theory:

Idk about other countries but here Reddit is pretty much the only big social media platform that isn‘t overrun by normies and boomers. So people from my country using reddit are either relatively young people that are somewhat chronically online or people or techies.

Now the reddit blackout generated a lot of attention and all the normies and boomers are like „wtf is a reddit“ and go to check it out. So that just ddos‘d reddit.

I have zero evidence for my theory but I really like it.