When we did forth(like) languages in computer science kindy (back in the 70s and 80s) the lecturers used to smirk because real languages like ADA took 20 passes and built huge models and were therefore more betterer and gooderer for some value of complex. Having the thing function as a stack machine in Reverse-Polish meant you didn't have to parse anything, it was basically already there for you sitting on the top of the stack (dock of the bay) watching the PC come in.

I think the smirk was misplaced. What they needed to do was talk about this in comparative language classes and about why people drive to small(er) languages, and fitness for purpose, and what kind(s) of things happen when you force people to think this way, vs why you drive to COBOL and what you force people to think and do, when you go there. They're all turing-complete. They're all capable of expressing the same things, at some differing level of complexity and cost, in some variant of machinery.