And it's also a lie that RPI encourages teams to play quality schedules, it simple encourages a team to game the system by scheduling a lot of home games against teams that it is confident it can beat, a few away games against teams it is very confident it will beat, and maybe one away game against a very tough opponent just so it can say it played someone. Comparatives of top-25 and top-50 records like what Sagarin shows is very nice, but only if the underlying data for the teams is of any use, but for RPI it isn't. So is Baylor the team that is 3-1 against the top 50 in Sagarin or the one that is 1-1 in RPI? And is UNC at 3-2 or 1-2? Makes for different arguments for the teams.
Overall, just makes sense to use a system that makes sense, not one that's useless.