The king is already mostly ceremonial. He seems mainly a stabilization factor for the country when both halves get a bout of separatism once more: He is the ultimate person every major politician talks to when nobody wants to talk to each other. The king does have some extra rights, but not too much, and the alternative seems worse.

King Albert 2 didn't want to become king but nobody else with enough capability was available. So it's not just a fun job.

But yes, the discussion to king or not pops up once in a while, and the general response seems to be we got much bigger problems.

Organized companies of men with guns, drones, tear gas, and access to the browser history of every person in the country

I mean, he's not getting a royal allowance, even though his father does. It sounds like they already have peaceful transition away from monarchy worked out, in which case, threatening or committing violence is senseless and potentially counterproductive.