Really nice to get replies on FR from those with direct experience. That is always what makes this place so informative. And I would normally agree with your position. I appreciate it would be a major inconvenience for those with clearance and between positions to have clearance revoked and then have to reapply again. But conditions have so changed now. I favor a clean break. When someone leave the government, any clearance they had is terminated at the same time. The downside outweighs the inconvenience.
Especially if they go into the media.
Clearance investigations are very extensive. They take months to years to adjudicate. They are cost and manpower intensive. There are times when the backlog of people waiting for clearance investigations to complete is months to years long.