I personally believe that a person starts to have more flexibility in regards to managing his holdings once he reaches overaccumulation status, and a person does not reach such status in order to fall out of it, but instead to stay in such overaccumulation status, so then he would be able to start to sell small amounts of BTC, but still staying in overaccumulation status.. so he might start with
price based sustainable withdrawal before he moves into time-based sustainable withdrawal, yet being in overaccumulatoin status provides options regarding how to mange BTC holdings and the extent to which to stop accumulating and/or to start to sell whether price based or time based.
Okay I think u understand your perspective on overaccumulation.
What about looking at it from this angle. The over there means you have gone past your limit.
Limit here to me isn't goal since goals tend to be refreshed.
Humans are insatiable so when they hit a goal they may push for another as long as its within the range of possibilities.
What am trying to say is, I think overaccumulating is getting more than you can afford to have. Say accumulation > Capacity.
Let's use this scenario
Say A cup and is been filled with water. When it gets overfulled any other addition becomes a waste except the cup capacity is increased or another is added to collect the excess.