Lifetime warranty does get tricky. Redline and HPL "meet or exceed" the MS6395, according to each brand, they just haven't paid for the license that says they're certified. Its more of a "self certification", but many old school dino oils can exceed it as its a weak standard.
I've yet to hear of a case of warranty being denied due to oil choice unless it was clearly sludged up and not maintained. They don't send oil away to get it analyzed.
But I get it, we all have different comfort levels when it comes to this stuff.