I think people have argued a very good point here, that in todays society it is legally and morally acceptable for an organisation to receive donations.
The problem is, is the wbts a business/charity, or is it Jehovahs earthly organisation? Jehovah is a god requiring exclusive devotion. He demands exacting standards from his followers. Something that may be seen as socially acceptable may be unacceptable to Jehovah and result in that person being put to death, either now or at armegeddon.
(Uz´zah) [possibly a shortened form of Uzziah, meaning "My Strength Is Jehovah"].
1.A Merarite Levite.—1Ch 6:29.
2.A son of Abinadab, undoubtedly a Levite. Uzzah and his brother Ahio led the wagon carrying the ark of the covenant from their house when David wanted it brought to Jerusalem. When the bulls pulling the wagon nearly caused an upset, Uzzah reached out and grabbed hold to steady the Ark, for which Jehovah struck him dead on the spot. David named the place Perez-uzzah because there Jehovah had broken through in "a rupture against Uzzah."—2Sa 6:3-8; 1Ch 13:7-11.
Notwithstanding Uzzah’s presumably good intentions to prevent the Ark from falling, it was judged as an "irreverent act." (2Sa 6:7) This was because deliberate disobedience was involved. Jehovah had instructed that under no circumstances was the Ark to be touched by unauthorized persons, a warning of public knowledge that carried with it the death penalty for violators. (Nu 4:15, 19, 20) Had authorized ones, Kohathite Levites, carried it with the poles on their shoulders as God had directed, God’s anger would not have been incurred.—Ex 25:13, 14; Nu 7:9.
If they are gods organisation they need to follow gods standards in everything, or otherwise they may as well not do anything at all. Social norms don't mean anything, Jehovah has his own unaltering standards. And if they are just an earthly organisation they shouldn't claim to be gods organisation, that would probably piss god off quite a bit and bring down his anger on them.
I know this is a very small side issue compared to some of the other things that are going on, and that its often misrepresented. But when I was a witness I rejected the big issues out of hand as being too outragous to be true, it was the culmination of all the small things like this that made me think and look into things more.