There's a lot of residual good will for Plan 9, because of the people involved, and because of the way many of its good ideas have work their way into other OSe

There's a lot of residual good will for Plan 9, because of the people involved, and because of the way many of its good ideas have work their way into other OSes (despite Plan 9 itself's relative lack of success). So ideas from Plan 9 will always have an audience. As for top of the front page, it's just how things bubble up and down, no cause for alarm.