For the customer there is hardly any difference that the server keeps running if a critical workflow, especially with a payment in flight, crashes and burns.

Or if they are unable to work, because they keep getting a maintenance page, as the load balancer redirects them after several HTTP 500 responses.

There're a huge different between a broken feature and the whole server crashing every time that feature is attempted.

Anyway, you prefer critical workflow like payment to show a success but actually be an unhandled error?

For the customer the difference hardly matters, they cannot fulfill what they intended to do, because someone somewhere forgot to catch an exception, going all the way out of the MVC controller, providing a very bad UI/UX, and from security point of view, a possible DOS attack vector.

I prefer an happy customer, and not having to deal with support calls.