People that are good at using Excel (as in, not just create a table with data, but know how to use it, do macros, pivots, etc), if the need arrives they just move up the chain to Access/Filemaker. I would say Excel is their gateway drug to coding. Maybe now they will move to Honeycode perhaps (if the UI is ok)
The ones that can't use Excel past putting =A1+A2*0.2 can't use most of the no code tools. But they can use a more visual approach to programming. This is the market I believe will/is exploding as more and more, pretty much everything requires a computer/app, but the customisation for each specific case isn't there. They require a more Lego like approach to 'software' development. For me, that is the NO-CODE definition.