Ugh!!! Alright you two. Matt and Nials don't get all heated over different housing arrangements.

Yes they spend the majority of their time in water, BUT can live in moist Coconut Fiber without a water source. Is it ideal? No. It can be done though. A water source should be provided since it is their natural behavior to seek out water, but can be housed without one.

As for the separate container feeding. Well it may cause some stress to a flighty GABF but most are calm and an be pretty bold. Many people do this as a way to prevent substrate ingestion when they cannot tang feed their frog. Its not anything to worry about unless the frog freaks out. Most will not.

Now I will not recomend removing the water source since he does indeed use it frequently. You can try to feed in a separate container if you like just to try it out, but if he freaks out then don't do it anymore.