My point was that Eclipse and Netbeans (and IntelliJ IDEA) cater to a specific public with specific needs and that public is not the same as Coda’s. To compare the experience of using Eclipse and Coda is questionable and to argue that Eclipse does not “feel designed” is absurd.
I never said Eclipse had better or worse UX than IntelliJ IDEA. This is not what the OP is about.
A couple times I've talked to Eclipse committers in detail about UI problems and what I get is either denial that there's a problem or an answer like "Oh, yeah, I guess we should do a UI sweep sometime." I'm sure Eclipse seems fine to the people who make it, but that's true of almost any terrible UI. Most people stop at "looks good to me," rather than going for, "tested to work well with the target audience".