Riot doesn't follow up.
So Riot didn't follow up on Shurima and just left a bunch of unfinished lore pages and then basically said "Don't worry we won't leave Bilgewater/Tahm Kench like we did Shurima! And now it's been more than a month since Tahm and we have no new lore, it's just so infuriating, either just say that there is no lore for game and focus completely on gameplay or actually put in a little bit of effort in making lore coherent and consistent! Sorry if this seems like belittling but I really like league as a game and it breaks my heart to see how many retcons, unfinished lores and gameplay/lore clashes league goes through on a regular basis.