This is purely my opinion and I'll respect yours if it opposes mine. Before I bought my 2021 Camry SE, my daily horse was a 2015 Fusion SE. I had heard people talked about how unreliable American cars were. But the look of the Fusion had me at first sight. So I bought a 2015 Fusion instead of a 2015 Camry.
I have drove the Fusion almost 7 years and she had 100k+ miles after we parted. I never had any issues with it. All parts, even the brake pads, were in good shape after the 100k miles. Everything original. I had ran over potholes, rough roads, dirt roads, and the car still felt like new. I have known people who drove Fusions of newer generations and they said their cars satisfied them as well. The Fusion isn't an unpopular car either. I see at least one or two every day, particularly the 14-16 models. So I actually think the Fusion is quite reliable at least in my experience and what I see around me.
The Fusions weren't bad cars, but the sales figures weren't there to warrant continued production. That's why it was killed off.
It's not a SUV. Just changing mindsets with vehicles. Cars aren't trendy. SUVs are trendy. I thought the Fusion had some good styling as well.
I have the same laments about the Crown Vics, Grand Marquis and Town Cars. By the time I got old enough to buy a brand new Town Car, they were discontinued.
I had 7 caddies from 75 to 97, miss them too
II had a 2013 Fusion, the styling was killer. I first noticed our parking enforcers in college had them when I was getting close to graduation time and I thought it was some exotic thing. It was a Ford Fusion, that became the next car I wanted. I bought one used in 2016 and loved the car. It didn't quite have the get-up and go that I would've liked, but I had the 1.6L, not the 2.0. I'd still have it, but I got a sweet deal I couldn't pass up on for a brand new leftover 2017 Mustang in 2018 and I traded my Fusion. That Fusion with my Mustang's 3.7L V6 would have been a killer sports sedan.