It definitely would, but I don't feel concerned about it. I think it's an overrated "problem" that misunderstands what people fundamentally want (better ways of building tight communities online).

The main problem I see with echo-chambers today is the culture war type of thing. I think there could be interesting solutions to that: based on the karma "distance", build clusters and adapt network topology so that you can only discover clusters that are at a finite distance. Minimize risks of conflict while letting people explore "fringe" ideas (for them).