Describe the bug
Minecraft 1.16.5 Forge 36.2.35 Mod 1.6.3

Golems can destroy any block, even bedrock. So do the collapse of towers.

Expected behavior
Unbreakable blocks like bedrock, barrier must not be destroy by golems and ignored in the collapse; golems may not destroy high hardness blocks like obsidian.

Neither of these problems are a bug, as there are not any reasonable times during which a golem or collapse would encounter such blocks.