I have a 2.0 LTG turbo in my 2015 Malibu. You are talking about LSPI, which was more of problem in earlier ones. Happens at low speeds during acceleration due to, in the case of the LTG, droplets of oil in combustion chamber. The LTG is actually a really good little engine.
Think about how many platforms use it. Camaro, Impala, Malibu, Equinox, Regal, CTS, Camaro, Traverse, Terrain, ATS and I am forgetting some.
The problem isn't all that wide spread. There are millions out there. Like anything you hear about the ones that fail.
Having said all that.
Change your oil more frequently. I do the Malibu every 4000 miles. Change your oil more often, run premium and change your plugs at 65,000 miles like they tell you to.
Don't cheap out. How much are saving over a year running regular unleaded?