I went through the same thing.
Researching cars is like reading the negative reviews on Amazon. You sometimes walk away feeling like your best option is to do nothing. Eventually you just hold your nose and jump in, hoping for the best (helluva way to spend ten$ of thousand$).
I dodged the Honda oil dilution issue because my brother (a mechanic) warned me against new engines, so I did research I would not have otherwise done (I was relying on the CR-V popularity.)
I dodged the Mazda CD issue only because life issues got in the way when car shopping in the fall of 2018. When I picked up again in February, the turbo had been released. But now there are folks talking about the turbo occasionally not working in certain weather conditions. Like you, I read a lot on these sites and independent reviews, and did not see any major negative issues (except the SCRM paint, which is easily avoided by making a different color choice).
This is not like buying a $50 drill that does not perform properly. You get much better customer service when spending way less money. And even if you have to eat it, it's only $50.
A car is not so easy to get out from under...and it ain't cheap. It's this lack of sufficient relief that spikes the angst.