There’s another aspect worth considering too: that, in past wars, states that have allowed exemptions on religious grounds have insisted on high standards for being included in that exempt category. Any suggestion that non-JWs were attempting to gain exemption from combat on the basis of weak links to the community might undermine ability of the whole community to claim exemption. In past situations, “minister” status has been required as proof of exemption on religious grounds, which JWs have sometimes successfully argued should apply to all JWs because they all preach. If this person was not currently participating in the ministry, for whatever reason, that may have been a significant barrier to him claiming exemption under the banner of JWs. If this is a factor, then the local elders might not wish to get involved in the case, not out of malice, but because of a real danger of putting others at risk if the authorities perceive the category of JWs is being interpreted too liberally for purposes of avoiding combat.
There as so many things we don’t know about the case, or the reasons for the actions, I don’t think there are good grounds for rushing to judgment.