I see where you're coming from, but I can't help but disagree about the subjective nature of thrill and excitement in cycling. Sure, comfort is important, especially for those with back issues, and customization can indeed add a unique touch to one's cycling experience. However, I believe that the practicality of a recumbent trike is still questionable, even if it provides a comfortable ride.
Let's take the ICE Adventure 26 as an example again. Yes, the Rohloff hub is impressive, and the customization options are top-notch. But at the end of the day, it's still a folder, and its durability and ruggedness can't compare to a traditional mountain bike that can handle rough terrains with ease.
And while cycling is about getting out there and pushing oneself to new limits, it doesn't necessarily mean that it should only be limited to traditional bikes. However, I still believe that recumbent trikes can't provide the same level of thrill and excitement as a traditional bike, especially when it comes to off-road cycling.
Don't get me wrong - if recumbent trikes work for some people, then that's great. But for me, I still prefer the traditional way of cycling that provides the thrill and excitement I'm looking for in this sport.