You need to remind us why exactly? Do you think people forget it's a mess right now? Or do you just want to post a salt thread to bash on Riot and pray for the old lore back?
If you asked why Riot is so slowly on the the issue. First the lore isn't that important to the game so I don't think it was their top priority back then. Second back in 2014 the whole issue was handle poorly and Riot was going through some changes internally with it's team. I don't think we offically met Jaredan until sometime during the Burning Tides event, before that we still believe Kite was the head of the lore team. They created foundation only a year beforehand, so Riot only really started their retcon this year. Riot judging by current trends will update a champion bio after it recieve some changes or a event involving them happens. They already delete the mention IoW from some of the champions bio a few month back.
If you still find it unacceptable that Riot is not doing enough, they could simply have just made some bullshit excuse to keep all the champion in the league. End of day we get these thing for free and we are barely a fraction of league community that matters much. People call more for the E sport and the game instead of lore.