Agreed, and I like your term "fuzzy value." You are right that the value stated is inflated since I'm not likely to spend $6,000 cash for a business class flight. Still, I do value the Chase points quite a bit, and if one is simply using them like cash (or at 1.5x in the Chase travel portal) they are missing out on some good opportunities to maximize value. For instance, I frequently can book domestic economy flights for 7,500 points each way. I did this a couple months ago on a flight that otherwise would've cost me $350, so a value of about $0.05/pt. That flight would've cost more than 20,000 points if booked in the Chase travel portal, instead of 7500 booked directly through the airline with transferred Chase points. Not to mention that I dislike booking through the travel portal due to all the potential issues with 3rd party bookings.
Later this summer I'm flying to Europe in business class on a flight booked with transferred Chase points. The flight was 58,000 points, but the cash price is $6,000. Would I have paid $6,000 for the flight? No, but even the economy ticket on the flight is over $1,000, and it is probably worth an extra $1,000 or so to me to be able to lie flat and actually sleep on the overnight flight to Europe, so still a pretty valuable use of points for me.