The reddit OP is selling a product (an app) with the word "JavaScript" in the name of the product. That's the problem.
That's completely different than using the word JavaScript to describe your product.
It's also different than using the word JavaScript in an open source project, such as a github repository.
---
Also, everyone is assuming that Oracle has demanded this. It could be that some over-eager lawyer at Apple set up a rule which says that any trademark cannot be in the name of an app. Until I hear some evidence that Oracle demanded this, I think this is an Apple issue. Can you sell an app with this name on Google Play?
This is one of the reason why new products have weird names such as Airbnb, Pinterest, and Lyft. You can't use a word which is already trademarked (Oracle owns a trademark on JavaScript) in the name of a product you are selling.
That's completely different than using the word JavaScript to describe your product.
It's also different than using the word JavaScript in an open source project, such as a github repository.
---
Also, everyone is assuming that Oracle has demanded this. It could be that some over-eager lawyer at Apple set up a rule which says that any trademark cannot be in the name of an app. Until I hear some evidence that Oracle demanded this, I think this is an Apple issue. Can you sell an app with this name on Google Play?