All the players who choose/prefer to only play Normal Games.
Instead of making Normal Games experience better, Rito copped out and planned on executing this really bad change.
Let's make our protests heard.
"On the 24th Riot will be deprecating part of the API that provides data on normal games. Well, the data will still be there but the part that links game participants to summoner names will be removed. Riot also updated their data policies to prohibit the tracking players' normal game data. So sites like op.gg will not be able to provide any information or your normal games by this time next week or risk losing access to the API." - DrProfessorPhD on reddit.