If you're using a MBP at the moment - then you're already pressing the fn key to use the functions keys for anything other than the media-stuff they've been designed around for years. Your workflow is exactly the same - you're just using soft keys instead of physical ones.
Or change the preferences so the function keys work as expected and you have to use the fn key to access the media options. I probably use the function keys 100x more often than the media ones.
So the touchbar has a setting where it behaves precisely like the current MBP? Esc, row of 12 keys, which are either f1-f12 or media with a setting, and are toggled between with fn? That's strictly worse if I only ever use it like that because it's the same but with soft keys, but sure that's basically the same.