There are many ways to achieve an effect like that, and that certainly is an easy way to do it. But it doesn’t really make sense to me to pay the real time GI tax for gimmick effects you can achieve without, unless it’s making significant contributions elsewhere anyway.
Not saying don’t use Lumen, just ask what value is it actually bringing that couldn’t be done without. Obviously I’m a huge fan of real time GI but not every project gets much benefit.