You’re correct that it gets it.
But it doesn’t actually uses it to execute the code, as far as I can see.
Check this part:
https://github.com/eclipse/vert.x/blob/master/src/main/java/io/vertx/core/impl/ContextImpl.java#L221
Method getNettyEventLoop()
is used for networking, as you can see in this code, for example: