[aljgz]

Using mouse is both slower, and needs more mental process to do the same task. Especially if you need to switch repeatedly while doing something, you come up with a short-term muscle memory: use vscode, alt-tab to the other vscode, alt-tab-tab to chrome. Now you know the first alt-tab takes you to the most recent vscode, but two alt-tabs take you to the first one. I develop a vscode extension and do this routinely. On mac I need to either use the mouse, or switch to vscode, then use CMD+backtick to switch to the other. Both are much slower and a disruption to the flow state.

Apple for some reason avoids giving people too many options. Just one option: "threat windows of the same application independently" with a default of no would make everyone happy.