Jarek 🚲
as per the note on the node, there really is a crossing signal here and a "Pedestrians obey your signals" sign. It's pretty stupid and it's usually ignored but it does exist. To answer the question, it doesn't have a button because it defaults to College Street having green.

There's going to be reconstruction here soon to build a bicycle track from Borden to Bellevue so this will likely change anyway