Long story short, I agree with you that you can feel when there is a tire pressure issue before the dash warning comes on, but had I stopped to check it out along side the road, I never would have made it home before it went flat. With TPS, I was able to watch the air pressure dropping and could gauge when/ if I needed to pull off and stop. For this reason, I like having it.
The active low-pressure warning is, indeed, useful. The whole TPS system is useful. Knowing there is an issue ahead of time or real-time is valuable. Easily knowing tire pressures so you can keep them correct also extends tire life tremendously and improves fuel mileage and safety.
What isn't useful is a low battery warning taking over the screen forever, until you press a special "cadence" which is very difficult (and dangerous to do while driving) and then results in a super-bright red light for the entire trip. Same thing with the fuel warning.
It makes me want to hit a Kawasaki engineer. What SHOULD happen is a warning that takes over the screen and you press and hold the handle button for 5 seconds to clear it. Plus it should have had an ambient light sensor to dim the dash indicator (non-dial) lights at night. The high-beam light is so bright, I had to put a 75% tinted sticker over it so I am not blinded at night when I use them. That red light is too bright at night, also.
So, back to TPS. The question that people are asking, which is valid: is Kawasaki's implementation of the TPS system worth the price of sensors, the difficultly with their installation, the inability to check tires until having considerable distance from home, the annoyance with the inevitable low battery warnings, and the way the warnings work?
I know if the batteries had been external (so larger and more easily replaceable or even rechargeable), most everyone would be happy. Maintenance would be cheap and easy, and warnings would be short and rare. But, alas, here we are...
Someone could make some good money designing replacement, rechargeable, external sensors that are compatible with the bike's ECU. Add a buttons on them to manually wake them up when wanted (in addition to auto-wake), and an integrated right-angle chuck so they don't have to be removed to fill air, and I know I would buy them immediately
THAT would be a good design.
Just call me "Captain Hindsight"...
https://knowyourmeme.com/memes/captain-hindsight