Nah. Ford is building some outstanding cars. I don't have a particular allegiance to a manufacturer, so I consider models from any source, and the Mustang is solid. Terrific performance (talking all facets, from straight line to braking to handling), sounds amazing, is great bang-for-the-buck, etc.
I've always been a Ford group man, but will readily admit that all the makers have had their ups and downs. As far as I'm concerned, Ford is killing it these days(except with Lincoln, which IMO they've killed, but that's just me). I've had the opportunity to drive several Fusions and a Focus or two made in the last few years, and they've all be superb. My dad's MKZ is-of course-also a Fusion in Lincoln dress, and for what it is it's a superb car. Its only failing is not being RWD
If only they'd actually gone through with using the DEW Lite platform on the new Mustangs . The DEW-98 was a huge step forward when they came out with it in 2000, although admittedly I'm really biased toward that particular platform. I've almost considered buying a Jaguar XF(or even S-type) just to get a newer DEW-98 car.