Sorry to hear about your loss Ron, with the internet being what it is speculations run high when you can't be there to explain.
If i had one gripe about the ultimate workbench it would be the "ultimate", it is one type of workbench approach in which it may very well be ultimate, but it can't work for everyone.
When i started doing more on site work i was looking for a portable workbench, and the UWB is one of the first to come up in youtube. But unfortunately i had to conclude that this type of workbench couldn't work for me. It is clear that the UWB puts sturdiness and rigidity at the top of priorities, so you are forced to give in on other aspects, mainly on transport volume and maneuverability. It would fill half my trailer and be difficult to get inside people homes here so it wouldn't work for me.
So i had to conclude that there was nothing on the market that would fit my personal needs and i designed my own, which is less sturdy and rigid, but takes less room and is easy to get anywhere in one trip.
But nevertheless Ron and Mathias Wandel were a great inspiration to me, i also bought plans mostly out of support for their effort. And i suspect many do the same when they buy my plans from the mails i am getting. In my case i can say that if i wasn't asking something for the plans, then i simply could not afford to spend that amount of time into making these projects and sharing them. Take it as investing in a community research program.