I think the difficulty with this, is how did your ram slot pin get bent? It seems like it is only one. How is that even possible in the manufacturing process?
Here is a theory: Ryzen 7040 black screen no booting - #15 by Second_Coming → a pin in the slot might have been bent while removing a very worn testing RAM module. I can imagine that deeper scratches on the RAM module could catch a pin on the way out. Similarly, my new RAM module might have been scratched before, and bent the pin, but I really think the pin was the cause, and the scratch was the effect.
I’m sure you could bend a pin while installing the RAM module, if you hit it precisely at an angle with the corner of the RAM or something. I can only say that I didn’t do this, I carefully and evenly inserted the module.
I do think my 11th pin looks worse than the images in the linked thread. It doesn’t just look bent. It might be the lighting, but it looks “shriveled”, for lack of a better word. It is not reflecting light evenly anymore. Maybe it was a faulty pin even before it was added to the module.