According to this feature request, the ability to open directly to the vault switcher was implemented in Obsidian 0.10.1.
But unless I’m misinterpreting, it looks like this update did the opposite - it changed the default startup behavior to opening the last used vault rather than the switcher dialog.
Is there a way to change this default back? I don’t want to open the last used vault on startup, I want to open the vault switcher first.