Riot has a record of every game that every person has ever played.

Therefore, could they be able to calculate our 'true' Player Level? They can technically use the same algorithm that calculates the exp you earn from each game and find out how much exp we should have gained after level 30 but before the new level changes were implemented, then add it to our current level to give us the actual level that older players should be at. Doing this will eliminate any problems of people thinking other players are 'noobs' just because their level isnt very high, but maybe they just hadnt played much after the new level changes were implemented.