No. I do not know the good Doc's credentials. I also admit to knowing almost NOTHING about the 5.7 subject - and I do realize that DocRocket KNOWS what he is talking about.

But I still feel that it is NOT that big of a deal.

I don't think there is that much danger of many people getting "sucked in" and being mis-lead by choosing and acquiring 5.7 ammunition & firearms un-aware of 'whatever' potential/inherent shortcomings they may possess. They could do worse.

I think most people that choose that particular format know pretty much what they are doing.

Just my opinion ...