Do not visit Ela Makkay in LA
There has been an option for a while for this actually.
Open the game options and under general options (wrench icon on the left of the window) you want to click the drop down for ‘Content Guide’ and select ‘Disable Personal Story’. You will still see personal/living story on your screen in the content guide, but the guide will ignore it and point you to nearby things like renowned hearts, vistas, dynamic events, etc. instead.
What if we would like to have our alts that still have PS to do get the pointer, but not our finished ones?
Though I did go to the NPC and watch the cinematic on my main PS alt, after making sure to first log in on my mid level alt and then on an 80 I don’t need to play for a while. The LS did not reactivate on my main.
I do think I’m missing a couple of achieves on my UI. I am pretty sure I did the speed run at the Timberline portion while that was still an active chapter and it’s not showing now. I can’t be 100% sure because I didn’t make a point of completing the achieves until I needed them for Luminescent.