Yep, agree with all of this actually. For me the XL is a creation all on its own. The pure power is hard to imagine. I would suggest the owner of such a thing is going to be “a certain type” - a hugely dangerous combo.
I think that any breed has the potential to “turn” so responsible, able individuals who own a dog are always a must.
I’ll tell you 2 short stories (are you sitting comfortably? Then I’ll begin

). There is a serious side and a funny side to the first!
Jaypo will tell me if I’ve mentioned this before

- bloody brain fog!……
We showed German shepherds for a long period. Before we married, I visited OH’s house. He had a big gentle GSD that “wouldn’t hurt a fly”. I stood up from the sofa to leave and said gentle giant (not OH

) flew at me, clamping his jaws on my sensitive area. Imagine me, up at A and E that night getting a tetanus injection, explaining why I had teeth marks on my flower

Fast forward a few years and married. Another GSD of ours lying in our conservatory - I think he’s dead - it turns out he’s sleeping. I’m leaning over him distraught, he wakes up, flies at me and bites me (this time right next to my left eye!) - another trip to A and E. - this time, very lucky that a plastic surgeon was on shift! He did a sterling job with me only having a small scar. I was told I was so lucky not to lose an eye. 😳
We had some amazing GSDs too but it just shows you.