It depends.
If you have customers already, you can start to code what they want.
In this way, the early stage of your start-up will be a Dev agency.
If you want to explore market unmet market demand by iterating MVPs, maybe it helps to use no-code tools.
But why not both? You can earn money by providing a Dev agency service. Also, hire part-time co-node developers to get you what you want to test.
I think it’s a convergent evolution.