"Ruined Portal" structures are too common in the overworld

The bug

I was exploring and checking out the new snapshot that came out today and I noticed that Ruined Portals are too common in the overworld. They are approximately a few hundred blocks from each other.

To reproduce

1. Create a new world in the newest snapshot (20w16a)
2. Find a "Ruined Portal" structure (or use a /locate command)
3. Move a few blocks away
4. Repeat until results show