Dijkstra had very strong opinions on structured programming, and BASICs in the 70s were very different to today's.

Consider the language reference for Altair BASIC (linked at http://www.swtpc.com/mholley/Altair/Altair_Basic.htm) - almost all of the flow control is by line number references.

By contrast, FUZE (https://fuzebasic.com/bin/FUZEBASIC_Programmers_Reference_Gu...) looks like it has all of the modern affordances you'd expect, like block IF statements, local variables, and the ability to refer to subroutines by name instead of by line number.