A good example: the report dialog. We need to be able to open one from every post, but if every post had its own Dialog, performance would suffer. Previously the solution was to use the same modal/sheet via Modal, and just swap out the content.

The solution here is to only render the dialog when it's opened, and to enable programmatic opening of said dialog e.g. from a context menu.

For other dialogs that can be rendered in situ, use Dialog directly. Only use this abstraction for instances that either aren't possible or would be performance intensive when defining a Dialog in situ.