Oh come on. The activist left is just the noisiest part of the Zoomer generation and it isn't bound to have any power. It's not like boomer politics became dominated by Weather Underground as they aged into power. This just isn't a real issue.
We're talking about a generation that went through college being told that the Weather Underground was something they should emulate.
I guarantee most young people have absolutely no idea who the Weather Underground was. Sure of the 10% of 18-22 year olds who are actually dialed in to politics, maybe a third hold these views but I see no reason to think that percentage would also apply to the 50% of young people who will start voting regularly as they enter their 30s.