Is it really so hard to understand? I was responding to a specific comment which was:
"Works fine on Linux. The IDE is Java based and it packages all the necessary tools with it so it should work fine anywhere."
Eclipse fits all those criteria (IDE is Java based and it packages all the necessary tools with it). But I would argue Eclipse doesn't "work fine" anywhere, it is a bloated, slow piece of crap (equally, everywhere), thus those criteria are not really that useful in determining if something "works fine" somewhere.
As a ten year (now-cured) Java/J2EE developer, I whole-heartedly agree with you that Eclipse is a bloated, slow piece of crap.
IntelliJ is much better, very quick and responsive. It's actually a great demonstration of how Java apps don't NEED to be slow PsOS. I'm an iOS guy and didn't know about Android Studio, and the prospect of going back to Eclipse has kept me from even thinking about Android dev. Now I might well give it another try.