I think the point of FI is to lower consumption. As long as your total consumption matches your total production over your lifetime, it's sustainable. The lev

I think the point of FI is to lower consumption. As long as your total consumption matches your total production over your lifetime, it's sustainable. The level of consumption described in this post (30k/y) is at or below the median level of consumption, so it is certainly attainable for many people, even if they can't achieve it as quickly as the OP).