I don't hate Java. I have no experience in using it as a language, so I'm not qualified to comment in that regard. My point is that I would rather not have to install it simply to use this tool.
Its like having to install Ruby simply because these a single Gem that you want to install and there is no other way to go about it, even if you never use Ruby for any other purpose. More of an annoyance than anything else.
Think of it this way: If there weren't licensing issues, they would probably just package it into the IDE distro, and you'd still be "installing" it on your system, you just wouldn't know about it..
Its like having to install Ruby simply because these a single Gem that you want to install and there is no other way to go about it, even if you never use Ruby for any other purpose. More of an annoyance than anything else.