Is Razor Pages a little too permissive with handler selection?

[tuespetre]

• The ability to define methods on the page model that can handle any HTTP method one would like (even OnFloopAsync) is a great feature to have, but should a Page with a model that explicitly defines OnGet but not OnPost really still accept POST requests, let alone DELETE or QWDASR?
• If a Page has a route template like /my-page/{handler?}, GET /my-page/foo might correctly select the OnGetFoo method, but GET /my-page/bar would just select the OnGet method if OnGetBar was not defined. Shouldn't it respond with 404 Not Found instead?