GJ, I get the logic in the fact that 5w30 is acceptable in other countries, and in fact in the manual for the CX-5 in those countries.
What I don't get is that you keep telling people to Google it, find it on other forums, etc.
Where are your oil analysis reports comparing the 2 different oils? Where is the other legitimate testing? Is there a control for how you're testing with regards to the new oils, sound being measured, and driving style between the 2 oils being the same?
You have posted no data, no legitimate analysis, and have told everyone to Google it themselves. Your entire claim rests with "it sounds better".
Just listening to the engine with the new oil vs the old oil doesn't constitute testing and analysis data. So why are you surprised that everyone is questioning it?
As for beer, I'm not a fan of IPAs but give me a good stout or porter any day