My issue with this is that a simple design can set you up for failure if you don’t foresee and account for future requirements.

Every abstraction adds some complexity. So maybe the PoC skips all abstractions. Then we need to add a variant to something. Well, a single if/else is simpler than an abstract base class with two concrete implementations. Adding the 3rd as another if clause is simpler than refactoring all of them to an ABC structure. And so on.

“Simple” is relative. Investing in a little complexity now can save your ass later. Weighing this decision takes skill and experience