yes dropping the slide on a round in the chamber is bad for the extractor, but the pics you posted of yours look okay.
I've had 9 shadows with somewhere close to a million rounds through them, outside of breaking extractors during kbs i've not had an issue with ftes. My shadow 2 didn't even break the extractor with the kb i did in it (don't grab ammo marked do not use and then, um, use it, bad bad plan). My practice gun is inching closer to 80,000 rounds now, same extractor and extractor spring in it from new, i've done one recoil spring change (8lb recoil). My match gun, nearing 20,000 rounds and i did the recoil spring at the same time as the practice gun, also 8lb.
So, when i see people posting issues with their guns, the last thing i think is it's the gun, for me, it's far more likely to either be ammo, bad grip or home gunsmithing that results in issues. Next would be mags, and lastly gun.