If you're asking about a personal opinion: any policy purely based on tradition is worthless. Tradition is just peer pressure from dead people. Just like any peer pressure, it's highly unlikely to produce anything but grief. If something is based purely on tradition without any other reason to exist, it's unlikely to be an optimal policy.
Back to the initial question. I don't think we can get infinitely progressive but we can keep subtracting the cruft of tradition until there is no necromantic peer pressure left at all. Mind that if something happens to be a tradition but still has a good reason to exist, it should be evaluated like any other idea in terms of being good or bad. I mean removing just one of the reasons to keep this idea. If it is left with zero reasons, it's out. Otherwise it's fair game.