yes there is a "twisted" scripture they use to get around these things.
"True, Christians today are not under the Jewish Law, but it helps us see Jehovahs viewpoint on such things yadda yadda."
A Jew was forbidden to eat an animal that had died naturally. They were not allowed to eat an unbled animal. They could, however, sell these animals to gentiles.
On this basis, whilst a witless cannot donate blood, it is a sin, he can benefit from the sin of an unbeliever by taking blood products made from the sinners donation.
A witless doctor can give a transfusion, if the patient requests it.
The WT can benefit from stocks gifted to them in arms companies, tobacco, and sales of Kingdumb Hells to other religions. They did not BUY the stock, they are not DONATING to Babylon the Great from the sale.
The flower shop owner is not contributing to false religion, he is merely taking money from a non-believer Just like the Jew mentioned above.
There's a big fat stinkin double standard here, aint there?
Its the kind of wierd bible thinking we find in the story of how the Tribe of Benjamin was saved from extinction.