Whether or not this is a change or a clarification is getting too far into the weeds, I think. From polling and my own experiences, it seems like the (vast?) majority of players were at tables where dying only added wounded when the condition was first gained -- including players at PFS events where this ruling matters the most.
Personally, I don't like the newly clarified rule and won't be running it that way at my tables, and I hope that I will be able to convince GMs where I am a player to do the same. High lethality, in my opinion, doesn't align super well with the heroic fantasy vision of PF2E as a whole, and I don't like the fact that healing someone who is down often decreases the amount of hits it takes to kill them.
I also think that the lethality of the low levels of the game was already too high, and so anything that makes that experience even rougher is a real feels bad.