His suit has alien powers so I can't really blame them.
This does actually seem like an idea worth trying. As Sleepyskull pointed out, when translating many superheroes to live action, you seem to have a choice between generic cool or faithful camp. It's the medium of comics and the skill of the artists that make a brightly-coloured spandex suit look heroic. On a real actor, the Wolverine suit would look like something out of a pride parade, no matter how well designed it is. Using CGI seems like it might allow for some of that visual artistry that makes it work on paper. And in Green Lantern's case, the suit is generated by the power of his ring, so it kind of lends itself to this method.
Not that I'm a fan of CGI in general, but when it can address something that traditional methods haven't done well, I think it can be a valuable tool.