The UX (both keyboard and software) was .. just awful.
If you had volunteers on a shoestring budget, you'd simply create a FVWM theme. It would be pretty normal, but with thick borders to compensate for the crude touchpad. You'd patch the program launcher to prevent running more than one thing at a time, thus dealing with the memory constraint and user confusion. That's it. Ship it.
Instead, they wrote a completely experimental desktop environment in an interpreted language. This is not the sort of project you'd bite off with volunteers on a shoestring budget.
I was a volunteer. I told them that stuff was nuts, but the paid staff were on a mission. Nothing could dissuade them. They wouldn't even dogfood. By that, I mean they didn't actually use the laptops. They used high-end developer workstations because the laptops were unusable. That should have been a hint.