I've been following them for a few years and, while I think there are some good ideas, I find them ultimately too unwilling to part with the status quo. I think real change in our society will require more drastic efforts that don't follow normal college-educated career trajectories.

This is something I care quite deeply about so it is the "problem I decided to solve", as OP puts it. I think what we do in professional life will most likely not involve solving meaningful problems, since most industry is not focused on such things (and can't, because it is often the cause). For me, I try to work on political and especially labour issues outside of work, since that seems to me to be the most likely way to achieve significant improvements in society.

The fact that 80000 hours has seemingly never discussed ideas involving labour unions or grassroots political activism but rather focuses on think tanks and other elitist top-down approaches is pretty telling of their neoliberal bent.