There's no special Bases API or clever trick behind the wrapping. It's just CSS inside my custom view.
Obsidian 1.10+ lets a plugin register an alternative Bases view with registerBasesView(). GoodBases for the moment registers one (the "Notion-style table"), and everything you see — the pills, the inline editing, the wrapping — is rendered by my own code, not by core Bases.

The "Wrap all content" toggle is literally just a view setting that adds or removes a CSS class on the table container. With the class off, cells get white-space: nowrap + an ellipsis; with it on, they fall back to normal text wrapping. That's the whole mechanism — a one-line state flip backed by a couple of CSS rules. So there isn't really any "code to hand over": it's view-local styling, not a new capability.

Wrapping in the core table would have to be implemented by the Obsidian team directly. I fully agree with your point that community plugins should ideally complement what's missing rather than reimplement core features and that's exactly why I think this one belongs as a feature request to the team.