>>29337999
Blood eagles are way too brutal to be psychologically damaging. Now just hear me out about this one.
Crazy over the top death methods, such as Iron Maiden, blood eagle, that bull method (or any other crazy fucked over the top) is actually a sign of weakness usually. It's because they do this to display savage intent to enemies, and like a small dog barking a lot, displays brutality as a cover up for underlying faults. That's why Romans used to go with methods of crucifixion. Because crucifixion is slow, costly, very human resource intense and overall not the most brutal/efficient method. Probably why crucifixion is one of the worst ways to go and it's a huge psychological blow to the enemy.
Look up the Appian Way to see some real fucked up stuff