Since when are project templates windows only? I spent a year in college using KDevelop like 10 years ago and it had project templates, as did netbeans.
Well, most of the people who fetishise Linux/UNIX would also not use KDevelop because of their deep devotion to the UNIX philosophy. I'm sure neither KDevelop does only one thing, nor does it does what it does well ("well" as defined by UNIX enthusiasts wielding pipes and shells).