You don't think ordering stock to that high specification, but only two cars and without gangways, warrants an eye roll?
There are 11 2-car units (175/0) and 16 3-car units (175/1), thus more 3-cars were ordered than 2-cars.
For comfort and facilities, the 175s beat 158s and 150s in every department, however compared to their British predecessors/colleagues, as someone who works them every day I cannot feel any warmth towards them.
Plus they have quirks (the sensor for the sliding doors being at ankle level for example) and moods (the sliding doors like to open and close on their own) and passengers can NEVER find the bins (tucked away in between rear-meeting seats.) Plus for seeming to the public's eye to be fairly modern trains, having no plug sockets is a massive turnoff for our pax. Plus the gangways are very narrow, and you have to make sure you have, as Tony Hancock once put it, a clear run before you step into them.
However, seeing how 002 stood up at Whitland, and having been on board when units have run over livestock and sandbags on the track, I feel more safe sat where I do inches behind the nose section than I do in a 158.
For being a French design built in Brum with an American engine being run by a Welsh rail company owned by the Germans, it's not done too bad!