Nope, I really don't agree on that one. It's easy to tell I really dislike TB. But do I consider moving to Dell or anyone other? Nope. And it's not TB that keeps me in Apple camp, it's not even MBP. It's the MacOS.
If Dell XPS could run MacOS, I would switch in a heart beat. I wouldn't even consider MBP anymore.
Failure of a particular function means that most of the people fail to realise or see the benefit of that function. So far, if I ask anyone who likes TB why is it better then classical function keys + keyboard shortcuts, no one, and I do mean NO ONE gave me any meaningful response.
You can't do anything faster on TB then with keyboard shortcuts. And pros do use keyboard shortcuts. A lot.
Again, I don't agree

Siri can be turned off. I know this because I never use Siri, so it's off. When Apple introduced Siri, they didn't take away anything, just added one more option to use. Look at it this way, if Apple removed home button and touch id, because now Siri can unlock your phone, and you can tell Siri what you want to open/close.
Of course they didn't do that.
But as I said, I'm still hoping for a 15" MBP without that gimmicky oled display below the main display