Unfortunately when I worked with Transputers is was verifying operation of finished equipment rather than on development so I didn't have involbvement in software development.
As I see it, the concept of stack computing was based on the methods proposed by Alan Turing in the 1940's where he visualized a computer as being an infinite line of data which could be traversed left or right based on the instructions being executed. Where he visualized a horizontal paper tape, I see the Transputer using a vertical silicon stack instead. I think in the early days of LSI it was probably more efficient to use a stack for all computation and keep slower 'normal' memory for storage. These days, the speed of registers and memory is much faster and the advantage of a fast stack has been lost, especially as programming in registers is so much simpler.
Do some research on Alan Turing and see if you agree. Most of what you will find is about his personal life but there are references to his technical achievements as well.
Brian.