What would happen if zeke didn't tell the marleyans that his parents were eldian resterestionist (sorry can't spell)

In one of the episode the zekes pasts we saw the marleyan police or investigators knew there were eldian rebels and they were close to cathing them And zeke told the police about them saving him and his grandparents.

What would happen if zeke didn't tell the marleyans about grisha, was it a matter of time?

That the rebellion would have failed anyway if zeke didn't told on his parents?