I recall starting to program in BASIC on CP/M and ZX-Spectrum machines and they didn't have procedures, only GOTO. Just like assembler, you can use all the JMP you want and not use structured programming and procedures but ... it will all become an unmaintainable mess in short time.

Very likely in a number of alternate futures (if not all of them), given the original set of CPU instructions, people would gravitate naturally to C and not some GOTO spaghetti or message passing or object oriented whatever.