> seemingly random positions and sizes
No they don't? I'm on Sequoia and Finder windows open in exactly the position of my last window. Height does vary on the view style though.
This looks maddening, it's the complete opposite of what I'd want.
> seemingly random positions and sizes
Indeed, so let's open each folder in an actually random position and size, whatever I sized it 3 weeks ago, really.
You can just choose not to use this. Nothing bad about having the choice, so no need to be negative.
> You can just choose not to use this
Sure. I'm just arguing that on paper this is not the solution to the problem described.
Do you understand what the phrase "Spatial Finder" means?
You say: "windows open in exactly the position of my last window" (hint: this is called browser behavior, not spatial behavior)
Spatial Finder: windows ignore your last window and open to "whatever I sized it 3 weeks ago" (each window space, position, size, etc is individually remembered by folder)
You would be served to read up some Finder history, like the link to arstechnica featured on the github, so you can understand what Spatial Finder means before weighing in on a tool specifically designed to bring back that feature.