good question:
before I answer, I may shortly question the term "believing JW".
Do you mean any still active ? or do you mean fully indoctrinated ones (which rareley would be here )?
If you mean still active, but belonging to the consciuos class, then I will try to answer:
Most, if not all of what deb/ren wrote is full of logical fallacies, flaws, errant reasoning or simply just copies of WT arguments.
The apologies for UN, false prophecy, pedophile are quite easy to refute. there is no substance.
However, why i believe we should not ignore him/her:
This board is pretty contra JW. We have hardly those who defend WT positions, mostly because it is a lost cause anyway. Still I think all arguements and discussion gain greater value, if somebody tries to counterargue. Lurkers and others are able to see both sides, and make an informed decision for themselves. A truth stands out more, when arguments to bring it down are successfully refuted.
Time and again, when reading certain threads, I think, ok this sounds right, but it may be onesided. When now apologists come, like scholar, debator etc, and try to proove the opposite, then I often see, how well founded the proof and facts are.
And one thing we might not wnat to forget: behind debator/reniaa, scholar or whoever is a real person, able to reason and to decide, whether truth or loyalty to a so called Gods org is more valuable to them. And remember, most of us wefe apologists before, something made us change, maybe it works for them too....
just my thoughts