>>4744
You should focus on what you want to do.
I think learning something new can do nothing but help you, you might pick up aspects of stylization and attractiveness from other styles that can help you make better looking art. But the effort required to properly learn a completely different style probably isn't worth it if you're not interested of using it, it's better to master a few things than be a "jack of all trades but master of none".
That said, realism is always something you should learn, because that's what everything else is based on.