How to programmatically trigger an export from a content page?

Sure, so you could potentially add a Contextual Filter to your export view that would filter on the entity ID of the thing you want to export.
Then construct and render a link to the export view display with an extra path segment on the end of the URL that's your entity ID.
That should then export just that single entity.

Automatically closed - issue fixed for 2 weeks with no activity.

Thank you. I will give it a try!