I think it is one of those situations where hindsight results in overly rose-colored views. The F-16 (as with a number of single-engined aircraft) was nicknamed "lawn-dart", and the F-18 required a mid-career SuperHornet upgrade into a different aircraft. The F-14 was a hangar-queen, etc. etc.
The 16 outgrew lawn dart once it got out of the prototype phase, and given the need for the computers that kept the bloody thing stable to stay operating in the event of engine out (and loss of alternator/prime mover for any pumps, plus any damage to control surface actuators by an uncontained turbine blade etc) it's not a surprise it had issues in the early days. It was still a damn good machine for what it did, and a good part of that from it's inherent instability once FBW invariants were violated.
The 14 reguired a higher degree of maintenance due to the consequences of the swing-wing mechanism, but that mechanism also enabled uncompromised performance in both flight regimes it was desired to be performant in. It didn't pretend that you could make a machine that can be a VSTOL, and a carrier aircraft at the same time. The radar systems were superb. The electronics were lackluster. I'm aware of issues with the quality of fire indicator lights though.
The 15 I hear surprisingly little complaint about actually. It just kinda is, and is given endless shit because it can't land or take-off from a boat.
