I bow to the "superior" knowledge if this ChatGPT guy (whoever he is). I'm not an expert on all the functions of the PCIe bus. You're not hot plugging the GPU (inserting or removing it with the power switched on) so I doubt it's needed.
If you check the edge connector on your new GPU card, you might find the gold pad at position B82 doesn't have an obvious Copper track leading off into the card. In other words the pin might not be used.
Just plug the card in and keep an eye on it. You could run FurMark, but if you don't get any BSODs, breathe a sigh of relief, After all, your old RX 580 worked fine so you're probably good to go.
I would suggest blowing the muck out of the slot before fitting the new card. Just hold your breath whilst you're doing it. As you say, messing about trying to repair the bent pin might make things worse. Don't do it.