Not particually.
Bearing in mind the longer term warranty generally only covers the frame, ive only ever had one bike that failed, an older model Bianchi, which was replaced at under two years old.
Otherwise, when i was looking for a more expensive bike, i liked the
Ribble spec and price but the carbon frame only had a limited warranty compared to the big manufacturers, Spesh, Trek etc etc...but it was a risk worth taking and i've not regretted it.
I suspect most people will buy based on bike type, spec and price...the warranty wouldnt be my primary thought....but that may be based on my reality, i'd just go buy something else or a new frame.