Nope. It's not. There are improvements. Won't dispute that. But the difference is not so jaw droppingly dramatic that 08 and prior touring bikes suddenly suffer so dramatically in comparison you don't want to ride them. Get a pre-09 dialed in to you like you should and it's still a completely adequate ride. Unless you're just a sucky rider.
There are
changes. Some are improvements. Some turn out to not be improvements. Often it's just a personal thing... Sometimes the chit just doesn't work!
My wife has a Chevrolet Venture. It has a button to push to open the rear door. She see's it and loves it. I see it and wonder what the heck was wrong with the handle that has been there for the last 40 years. The handle worked every time and was cheap to manufacture. Never broke one ever. And it suited the purpose well - to open the door. I am sure the new button and associated pieces added cost to the vehicle. And it has failed twice. Is the new button to open the rear door an improvement? Not to me... But my wife still loves it...
Same with new bikes. Every year new models are rolled out. Everyone who's into bikes gets excited, whether they're looking to buy or not. We all look at the new features. Some are eager to buy because of the features, others won't buy because of the features. It seems the last few years the prices have gone up and the reliability has gone down - so I've not been interested in buying. I'd love to have some of the new features.... A new chassis, a 6 gallon tank, stretched bags and wider rear tire.....if.....I could order one without TBW (because it scares me), without the 110 motor and all its issues, without power this and power that...... but they don't make them like that. The features I don't want out number the features I want.
So I ride what I have and hope someday a new model rolls out that strikes me as super cool, reliable and a value for my money...

I'm still waiting.....