I've had my Touring XT for 3.5 months so far, and about 3,700 miles. I still love to drive it.
I'm coming from a 2015 Legacy Limited (and a 2011 Sonata Limited before that).
All the things you read in the forum have some truth in them. HOWEVER -- my personal experience is those are small things that in no way change my mind about how much I enjoy this car. It is such an improvement from the 2015 in so many ways. As in all forums, the posts are mostly filled with complaints about small stuff, as people that are generally happy with the cars are often not the most vocal in the forums. If I only read the forums without having the car, I'd be scared off. But as it is, I know what my reality is and read the forums with a grain of salt (including what you may choose to do with my own post, of course).
It's true the stop/start is a bit annoying. But for me personally, it's no big deal. And turbo/CVT combo is not perfectly linear with its power output. But wow, so much more get up and go compared to my 2015. So much fun knowing there's so much acceleration just waiting to be asked! I don't happened to get flagged with very many false warnings on the driver alerts. And I actually like the controls as they are, without as many physical controls and a cleaner look. It works just fine as my most used things are easy.
There are plenty of little things in the infotainment that should be made better, and are certainly able to be updated via software updates if Subaru chooses to do so. TBD whether they're interested/capable of doing that or not.
And yes, you can turn off the screen. Although in night mode with the navigation, it's not so bright anyways.